tamarin

noun

1. any South American marmoset of the genera Saguinus and Leontopithecus (Leontideus), having silky fur and a nonprehensile tail: several species are threatened or endangered.

noun

1. 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