(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.

A jar into which anybody who utters a profanity is obliged to drop some money.

(historical) A pottery vessel, sometimes decorated, intended to hold oil or wine.

(computing, informal) (of the Java language) Problems caused by incompatible versions of a JAR (Java archive).

Alternative spelling of Leyden jar

A cassoulet-type bean dish from Guernsey.

A container for holding papers, each bearing the name of a task to be completed, serving a similar purpose to a to-do list.

Alternative spelling of nightjar.