A small ball mill with a jar-like drum.

plural of jar mill

plural of cupping-jar

Alternative spelling of cupping jar

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.

plural of unit jar

plural of jam jar

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

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

plural of stirrup jar