quintuplet
(noun)
noun
1. the cardinal number that is the sum of four and one
Similar word(s): cinque, fin, five, fivesome, pentad, phoebe, quint, quintet
Definition categories: quantity, digit, figure
2. one of five children born at the same time from the same pregnancy
Definition categories: person, sib, sibling
3. a set of five similar things considered as a unit