(1):

(n.) The jack of clubs, or any other trump held in sequence with it, whether by the player or by his adversaries.

(2):

(n.) A certain game of dominoes in which four dominoes (the 4-3, 5-2, 6-1, and double blank), called matadors, may be played at any time in any way.

(3):

(n.) The killer; the man appointed to kill the bull in bullfights.

(4):

(n.) In the game of quadrille or omber, the three principal trumps, the ace of spades being the first, the ace of clubs the third, and the second being the deuce of a black trump or the seven of a red one.