Marmoset
Marmoset (mar"mo*zet`; 277) , noun
[French marmouset a grotesque figure, an ugly little boy, prob. from Late Latin marmoretum, from Latin marmor marble. Perhaps confused with marmot. See Marble.]
(Zoology) Any one of numerous species of small South American monkeys of the genera Hapale and Midas, family Hapalidae. They have long soft fur, and a hairy, nonprehensile tail. They are often kept as pets. Called also squirrel monkey.