To raise, hoist, or lift a thing using a jack, or similar means. / (informal) To raise, increase, or accelerate; often said of prices, fees, or rates.

(obsolete) A monkey. / (dated, derogatory) An impudent or mischievous person.

plural of jackanape

A jack on a wall used to connect a telephone to the telephone line.

A jack on a wall used to connect a television to the cable television service.

Alternative spelling of jerrycan

The glenohumeral joint.

(anatomy) The shoulder joint, a joint that connects the scapula (shoulder blade) and the humerus (upper arm bone).

(slang, US) A loan at usurious interest rates, normally made by organised criminals.

(idiomatic) To make conclusions before being presented with all the evidence.