noun |
adj |
verb |
adv |
(noun) quadruple, quartet, quartette
a set of four similar things considered as a unit
(noun) quad
one of four children born at the same time from the same pregnancy
(noun) IV, Little Joe, tetrad, 4, four, foursome, quartet, quatern, quaternary, quaternion, quaternity
the cardinal number that is the sum of three and one