One more than three; twice two: a cardinal numeral: as, four legs; four wheels.n. A number, twice two or the sum of three and one; the number of the fingers of one hand, without the thumb.n. A symbol representing this number, as 4, IV, or iv.n. A four-oared boat; the crew of a four-oared boat.n. A playing-card with four pips or spots on it.n. In dice or dominoes, the face of a piece showing four spots.n. plural In the game of poker, a hand containing four cards of the same denomination, and ranking between a full and a straight flush.n. A team of four horses harnessed together to draw a coach or other vehicle: as, a coach and four; a well-matched four.n. plural Same as fourings.n. In cricket, a boundary; also, a ball hit by the batsman, which reaches the boundary, thus scoring four runs. See fourer.