4 - definition of 4 by The Free Dictionary
Noun. 1. 4 - the cardinal number that is the sum of three and one. IV, Little Joe, quadruplet, quartet, quatern, four, quaternion, quaternity, tetrad, foursome, quaternary. digit, figure - one of the elements that collectively form a system of numeration; "0 and 1 are digits". Adj.
DA: 67 PA: 12 MOZ Rank: 68