any of numerous small monkeys of the genera Saguinus (or Leontocebus) and Leontideus, of South and Central American forests; similar to the marmosets: family Callithricidae
Word origin
C18: via French from Galibi
tamarin in American English
(ˈtæmərɪn)
noun
any of several South American marmosets having long, silky fur, esp. any of a species (Saguinus tamarin) having black hands and feet