triplet

nouns

the cardinal number that is the sum of one and one and one
3, III, deuce-ace, leash, tercet, ternary, ternion, terzetto, three, threesome, tierce, trey, triad, trine, trinity, trio, triplet, troika
one of three offspring born at the same time from the same pregnancy
triplet
is a type of (narrower)
a person's brother or sister
sib, sibling
a set of three similar things considered as a unit
triad, trio, triple, triplet