ETYM Old Eng. four, fower, feower, AS. feówer.
(Homonym: for, fore).
Being one more than three; SYN. 4, iv.
Množina: fours
The cardinal number that is the sum of three and one; SYN. 4, IV, tetrad, quatern, quaternion, quaternary, quaternity, quartet, quadruplet, foursome, Little Joe.