Jam

A kind of frock for children.

See Jamb.(Mining) See: Jamb

To press into a close or tight position; to crowd; to squeeze; to wedge in; to cram; as, rock fans jammed the theater for the concert.

To crush or bruise; as, to jam a finger in the crack of a door.[Colloq.]

To bring (a vessel) so close to the wind that half her upper sails are laid aback.(Naut.)

To block or obstruct by packing too much (people or objects) into; as, shoppers jammed the aisles during the fire sale.

To interfere with (a radio signal) by sending other signals of the same or nearby frequency; as, the Soviets jammed Radio Free Europe broadcasts for years during the cold war.(Radio)

To cause to become nonfunctional by putting something in that blocks the movement of a part or parts; as, he jammed the drawer by putting in too many loose papers; he jammed the lock by trying to pick it.

To become stuck so as not to function; as, the copier jammed again.

To play an instrument in a jam session.(Music)

To crowd together; -- usually used with together or in; as, fifty people jammed into a conference room designed for twenty.

A mass of people or objects crowded together; also, the pressure from a crowd; a crush; as, a jam in a street; a jam of logs in a river.

An injury caused by jamming.[Colloq.]

A difficult situation; as, he got himself into a jam.[informal]

A preserve of fruit boiled with sugar and water; also called jelly; as, raspberry jam; currant jam; grape jam. Also: jelly