A vessel for storing cookies or other food. / (Internet) The storage space for browser cookies.

(US, dated) A container used for urinating or defecating when it is not possible or convenient to use a bathroom or toilet; a bedpan, a chamber pot. Commonly used in hospitals, where it is normally called bedpan. Formerly used in private residences that were without an indoor toilet or bathroom.

A rubber-sealed screwtop jar used to store food.

The goatsucker.

plural of jar-owl

A piece of laboratory equipment used for creating vacuums, often made of glass in a bell-like shape. / A bell-shaped glass used to cover and protect items such as food.

(electrical engineering, historical) A glass jar or bottle used to accumulate static electricity between two electrodes.

(archaic, medicine) Synonym of cupping glass

A glass container for jam. / (Cockney rhyming slang) A car.

A small insulated Leyden jar, placed between an electrical machine and a larger jar or battery, so as to announce, by its repeated discharges, the amount of electricity passed into the larger jar.