any small South American monkey of the genus Callithrix and related genera, having long hairy tails, clawed digits, and tufts of hair around the head and ears: family Callithricidae
2. pygmy marmoset
Word origin
C14: from Old French marmouset grotesque figure, of obscure origin
marmoset in American English
(ˈmɑrməˌzɛt; ˈmɑrməˌsɛt)
noun
any of a family (Callithricidae) of very small New World monkeys of South and CentralAmerica, with thick, soft, variously colored fur
Word origin
ME < OFr marmouset, grotesque figure < ?: form prob. infl. by marmouser, to mumble, grumble, of echoic orig.