A cylindrical lidded glass vessel for collecting and storing gases from experiments etc.

(archaeology) An Egyptian pottery container in which the entrails of a mummy have been placed.

(Canada, US) A glass jar with a screw top, often used for preserving food.

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.