One who works in a specified manual trade. Often used in combination: a lumberjack; a steeplejack.
A sailor; a tar.
Games A playing card showing the figure of a servant or soldier and ranking below a queen. Also called knave.
Games A game played with a set of small six-pointed metal pieces and a small ball, the object being to pick up the pieces in various combinations.
Games One of the metal pieces so used.
Sports A pin used in some games of bowling.
A usually portable device for raising heavy objects by means of force applied with a lever, screw, or hydraulic press.
A wooden wedge for cleaving rock.
A device used for turning a spit.
Nautical A support or brace, especially the iron crosstree on a topgallant masthead.
Nautical A small flag flown at the bow of a ship, usually to indicate nationality.
The male of certain animals, especially the ass.
Any of several food and game fishes of the family Carangidae, found in tropical and temperate seas.
A socket that accepts a plug at one end and attaches to electric circuitry at the other.
Slang A small or worthless amount: You don't know jack about that.
To hunt or fish for with a jacklight: hunters illegally jacking deer.
To move or hoist by or as if by using a jack: jacked the rear of the car to replace the tire.
To raise (something) to a higher level, as in cost: "Foreign producers jacked up the price on some steels by over 100%” ( Forbes).
Baseball To hit (a pitched ball) hard, especially for a home run.
To hunt or fish for quarry by using a jacklight.