0 a brand name for a type of glass container with a wide opening at the top and a fitted lid that is usually sealed (= completely closed) with a rubber ring, used for storing food:
Pesto will store refrigerated in a Kilner jar for about three weeks.
On the side was a small Kilner jar of peppered pineapple relish.
Pack the washed leaves into sterilised Kilner jars.
If you want to make a big batch of the spiced plums you can keep them in the fridge in sterilised Kilner jars.
Kilner jars are great and have that lovely homemade look in the larder or fridge.
