n. A New World monkey of the genus Aotu, which is active at night and has no pinna of the outer ear.
the GNU version of the Collaborative International Dictionary of English
n. A small, nocturnal, South American monkey of the genus Aotus (formerly Nyctipithecus trivirgatus), with large owl-like eyes; hence, the common name owl monkey.
The Century Dictionary and Cyclopedia
n. The native name of one of the small, large-eyed, nocturnal South American monkeys of the genus Nyctipithecus (which see), as N. trivirgatus, or N. rufipes. Also written durukuli.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. nocturnal monkey of Central America and South America with large eyes and thick fur