(anatomy) A type of joint where motion is restricted to one plane as in the knee or elbow.

a joint that may move horizontally such as the neck vertebrae

(idiomatic) Someone with the roles of judge, jury and executioner; someone with full power to judge and punish others unilaterally.

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).

A sweatshirt or jacket where the left and right pockets meet in the middle to make one large pocket.

(derogatory) A self-important but minor official.

(archaic) yellow fever

(slang) female breast

The Pig War.