A glass preserving jar with a metal lid which forms an airtight seal, used to bottle fruit and vegetables.
〈商标〉（水果和蔬菜的）保鲜大玻璃瓶
Example sentencesExamples
If freezing and wrapping seems too much like hard work, pesto will store well refrigerated in a Kilner jar for about three weeks.
He also uncovers the fact that one of his forbears is not only called Kilner, but was a glass manufacturer - the inventor of the world-renowned and still used Kilner jar perhaps?
Airtight storage for preserving food is now taken for granted, yet such items didn't exist until the 1890s when the world-renowned ‘Kilner jar’ went into production.
He found that his great-great-grandfather Caleb Kilner invented the screw-topped, rubber-sealed Kilner jar in the 1890s - but the family fortune was squandered.
Origin
1930s: from the name of the manufacturing company.