| Noun | 1. | Platyrrhini - New World monkeys: capuchin; douroucouli; howler monkey; saki; spider monkey; squirrel monkey; titi; uakari; woolly monkey; marmoset; tamarin mammal family - a family of mammals Anthropoidea, suborder Anthropoidea - monkeys; apes; hominids New World monkey, platyrrhine, platyrrhinian - hairy-faced arboreal monkeys having widely separated nostrils and long usually prehensile tails Callithricidae, family Callithricidae - marmosets Cebidae, family Cebidae - all the New World monkeys except marmosets and tamarins |