'fivesome' definitions:

Definition of 'fivesome'

From: WordNet
noun
The cardinal number that is the sum of four and one [syn: five, 5, V, cinque, quint, quintet, fivesome, quintuplet, pentad, fin, Phoebe, Little Phoebe]
noun
Five people considered as a unit [syn: quintet, quintette, fivesome]