1A solid or hollow object which tapers from a circular or roughly circular base to a point.

1. 1.1Mathematics A surface or solid figure generated by the straight lines that pass from a circle or other closed curve to a single point (the vertex) not in the same plane as the curve. A cone with the vertex perpendicularly over the center of a circular base is a right circular cone.
   〔数〕锥体，锥面（right circular cone 为直立圆锥）
   Example sentencesExamples

   • The shape of the area of influence is an inverted cone, with the cone's vertex being the nose of the vibrator.
   • First we should note that conic sections to Apollonius are by definition the curves formed when a plane intersects the surface of a cone.
   • In the first 57 propositions in On the Section of a Cone Serenus examined triangular sections of right and scalene cones made by planes passing through the vertex.
   • If the planes pass through the vertex of the cone, the conics are said to be degenerate, otherwise they are not.
   • To be precise, it has to pass through the cone surface
2. 1.2 A conical mountain or peak, especially one of volcanic origin.
   圆锥形山脉（或山峰）（尤指）火山锥
   Example sentencesExamples

   • Phreatomagmatic to strombolian cones, which are the first eruptive vents of the horizontal series, are intercalated at the contact.
   • Extinct volcanic cones are very much a part of the Auckland landscape.
   • Even steam emanating from a volcanic cone is newsworthy.
   • That error is encouraged by the mountain's cone shape and real volcanoes nearby - as at Sibley Preserve.
   • Then a few cones of mountains to the north, a few more at great distance to the south.
   • Flying into Guatemala City before dawn, I saw a volcano on fire, glowing lava streaming down its cone, reddening the darkness.
   • The signature volcanic cone awaits at the bottom.
   • The cones are composite because they consist of alternating layers of ash and frozen lava.
   • The summit cone of Ben More is magnetic and compass readings can be misleading.
   • When magma moves beneath a volcano, such as when the magma chamber fills prior to an eruption, there is swelling of the volcanic cone above.
   • Its form may imitate volcanic cones such as can be seen in the Tuxtla Mountains only 100 km to the west.
   • The mountain is a cone of ice and limestone on a granite base, and the peak is considered by most climbers to be more difficult to reach than Everest's.
   • These views include the horizon, the ocean and the astonishing volcanic cones of the four Glasshouse Mountains on the coastal plain.
   • South is the desert and further south-east are more mountains with desolate plateaux and volcanic cones and craters.
   • Monogenetic volcanoes are small and occur as scoria cones, tuff cones and rings, and maars; they form from single, typically brief eruptions.
   • Scoria is the most common material in most volcanic cones.
   • This is a living reef resting on an extinct volcano cone which comes up about three kilometres (two miles) from the ocean floor.
   • In 1949, both basanite and tephrite were ejected during a single, 5 week long eruption that formed monogenetic cones and lava flows on the volcanic island of La Palma, Canary Islands.
   • At the center of the tableau was the volcano's cone and its steaming crater.
   • Various architectures connecting extrusive mud volcanic cones to their underlying source layer have been described, ranging from bulbous diapirs to steep diatremes and narrow vertical pipes.
3. 1.3 A plastic cone-shaped object that is used to separate off or close sections of a road.
   （分隔、关闭道路的）锥形交通路标
   Example sentencesExamples

   • Moving on toward the production control area, Duncan stops to indicate a red traffic cone sitting inside a square taped on the floor.
   • It follows the recent discovery of a device hidden in a traffic cone in Northern Ireland which was intended for a member of the security forces.
   • It is thought the gunman had moved road cones from work being done in Watling Street, to block the left hand side of the road, forcing the woman driver to slow down and move to the right.
   • The men, both in their 20s and wearing baseball caps, punched the victim in the face before ramming the pointed end of a traffic cone into his face.
   • At around 10 pm a man was driving along Ballyvally Road at Mayobridge when he found the road blocked by cones.
   • But the piston restricts the amount the gate can open, so the gate is be propped open halfway by a bright orange traffic cone.
   • Jay slows it down a bit, takes out a few road cones and laughs.
   • The traffic cone has been removed from it, and without a shadow of a doubt, it is an accident waiting to happen, and then it will be too late.
   • Video footage showed him throwing up to a dozen missiles and a traffic cone at police in the White Abbey Road area during his 35-minute involvement.
   • Cross Street, off Victoria Road, had been turned into a dumping ground for temporary road signs, cones, bollards, and even an electrical generator.
   • DID YOU ever wonder about the sudden appearance of parking cones strewn across the roads around town diverting traffic in all directions?
   • A bright orange traffic cone now marks where the lead sculpture once stood.
   • In several incidents of violence, Mr Bennett and Mr Burns were punched, kicked, struck heavy blows with a baseball bat and assaulted with a traffic cone by the gang.
   • Problems with new traffic lights at the notorious Welcome Bay roundabout have resulted in road cones and a temporary ban on right turns from Ohauiti Rd.
   • However, the three times British champion crashed on the way out of the Quays after a TV motor bike crew accidentally flipped a traffic cone into her machine.
   • He said that placing cones in the road, obstructing other vehicles from parking, was illegal and would be dealt with accordingly - depending on the seriousness of the obstruction.
   • My pillow was my bag, and I had ingeniously propped a board between a traffic cone with a crack up the side, and a milk crate.
   • On another occasion a man driving towards Otley from Bradford had a traffic cone hurled at his car in the same spot.
   • There are also several planks of wood, a traffic cone, a section of mesh metal fence and a shopping trolley.
   • Upon the traffic cone, written in black permanent marker, was a large ‘D'.
4. 1.4 An edible wafer container shaped like a cone in which ice cream is served.
   （盛冰淇淋的）圆锥形华夫卷筒
   Example sentencesExamples

   • Unfortunately, celery sticks aren't as tempting as overgrown cinnamon buns and chocolate-dipped ice cream cones.
   • A large crowd gathered in the town centre for the parade, the children enjoying green ice-cream cones as they watched.
   • The man handed them two chocolate ice-cream cones and they walked off to the park bench.
   • Ice cream cones will be served; the butterfly wing will be open.
   • The 50-rupee note in my pocket will do, I decide. I buy two chocolate flavoured ice cream cones.
   • There are wonderful businesses like them scattered all over Scotland, still managing to convince locals to eat ice cream cones in the street, come rain or shine.
   • Three burgers, three chocolate ice cream cones, and two hours later, I felt very bloated and quite full.
   • I no longer eat chocolate ice cream cones because of that searing memory.
   • But on a few days of the year his company gives away free ice-cream cones to their employees…
   • He watched in interest as Jessie paid for two ice cream cones made with chocolate ice cream.
   • Sensing trouble, Daniel shook his head and stuck his chocolate wafer into her cone.
   • My only other memory would be of how sometime later, possibly on that same day, Uncle Fitz walked with me to the drugstore where he bought us both ice cream cones.
   • Her first job was scooping ice-cream cones at the foyer during the school holidays.
   • The family was going for a walk in the park, enjoying chocolate ice cream cones.
   • Noted for our ever popular cheese curds and huge ice cream cones, we also have one of the finest assortments of home made cheeses anywhere in the country.
   • It will remind you of laughing with friends, truth or dare games at slumber parties, ice cream cones, and all the best things in life.
   • The free ice cream cones will be 27% smaller, at least until this evening.
   • These include sellers of tea, ice-cream cones, soda, buttermilk, toys, trinkets and even small electronic gadgets.
   • Bars, cones, sundaes, ice cream on sticks - each and all of these is welcome while you are catching a tan, having fun or wondering what to have in your lunch break.
   • I save the 10 cents it used to cost me for each cup to put the ice cream in, and I can charge 15 cents more for the resulting ice cream cones.
5. 1.5 A ceramic pyramid that melts at a known temperature and is used to indicate the temperature of a kiln.
   （在既定温度下融化的，用以测量窑温的）测温锥，示温锥
   Example sentencesExamples

   • When firing clay, the temperature at which you fire is gauged by cones placed in a kiln.
   • Planters are covered with a clear glaze and fired to cone 05 in an electric kiln.
   • Thus, pyrometric cones give a temperature equivalent, they are not simple temperature-measuring devices.
   • After the tiles were coated, they were loaded into the kilns and fired to cone 5.
   • The imperfections are then cleaned off with tools and the casting is put in the kiln at 1225 cone 6 and becomes vitrified porcelain.

   Synonyms

   turret, minaret, spire, belfry, obelisk, needle, pyramid, finial, shikara, mirador
6. 1.6
   short for cone shell

2The dry fruit of a conifer, typically tapering to a rounded end and formed of a tight array of overlapping scales on a central axis which separate to release the seeds.

1. 2.1 A flower resembling the cone of a conifer, especially that of the hop plant.
   （尤指啤酒花藤的）球花
   Example sentencesExamples

   • I covered the plants with rose cones from the garden center.
   • In most varieties, the petals droop after growing outward from the cone, accounting for the name given to the plants in the Ozarks: droops.
   • Magnus has large, warm purple flowers with an orange cone on strong stems about 90 cm tall and has a very long flowering period from July to October.
   • A careful look at an echinacea flower in full bloom will reveal the source of the name: the dark purple cone of the flower does resemble a sea urchin.
   • At the end of the esplanade and its enchantment is another delight; a bellombra, a gigantic tree with great white flowers in the form of cones.
   • At this time of the year dried flowers are a good alternative to fresh, and combinations of seed heads, grasses, dried hydrangeas, interesting branches, cones, moss and fungi work well.
   • Both have daisy-like flowers with a black cone at the centre, and both need well-drained, humus-rich soil and also benefit from feeding in midsummer.

3Anatomy
A light-sensitive cell of one of the two types present in the retina of the eye, responding mainly to bright light and responsible for sharpness of vision and color perception.