The term 'Small American Monkey' can be summarized as a MARMOSET, which is an 8-letter word. Marmosets are small primates native to South and Central America, and are the smallest of the New World monkeys. They are known for their long tails and claws, which they use to climb trees and other structures. Marmosets live in groups and communicate with each other through vocalizations and scent marking. They feed on insects, fruits, and tree sap.