A hydraulic jack (lifting device) mounted on wheels, and equipped with a long handle which also acts as a pump handle, which can be pulled to wherever it is needed.

plural of jack-rabbit (alternative form of jackrabbits).

plural of jack-in-office

(derogatory) A self-important but minor official.

plural of trolley jack

A card game similar to all fours.

plural of jack mackerel

An automaton, on a clock, that strikes a bell every quarter hour

(now rare) A roller towel.

plural of jack-ass