1An army officer's tight-fitting undress jacket reaching to the waist.
（军官的）紧身短茄克
Example sentencesExamples
The South selected cadet gray as its official uniform color - in tribute to ‘the long gray line ‘at West Point - but the War Department could not begin to supply so many shell jackets and trousers.’
2The jacket of a shell suit.
休闲套装的上衣
Example sentencesExamples
As a converted downhill skier from Pennsylvania, I came prepared with a neophyte backpack I use to carry a pittance of items, mainly a shell jacket, when I kick and glide on nearby hills.
However, in testing the vest and examining in detail the shell jacket, and looking over the new cargo pants, I have to say, the quality and function your customers want is definitely there, at a fair price.
Specially designed to zip into a shell jacket, this is a versatile little number with little nylon/Lycra hems round the cuffs to keep out the elements.
The two pieces, fleece and shell jacket, work well in combination with each other and are just as functional when worn as separates.
Each of the fleecy shell jackets is suspended from a hook, with the trousers tucked in beneath and bent at the knee so that the seat touches the hem.
Definition of shell jacket in US English:
shell jacket
noun
An army officer's tight-fitting undress jacket reaching to the waist.
（军官的）紧身短茄克
Example sentencesExamples
The South selected cadet gray as its official uniform color - in tribute to ‘the long gray line ‘at West Point - but the War Department could not begin to supply so many shell jackets and trousers.’