the GNU version of the Collaborative International Dictionary of English
n. A genus of mammals, including the horse, ass, etc.
The Century Dictionary and Cyclopedia
n. The typical genus of the family Equidæ, formerly conterminous with the family, now often restricted to the horses proper, as distinguished from the asses and zebras. The horse is E. caballus. See horse, and cut under Equidæ.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. type genus of the Equidae: only surviving genus of the family Equidae
Word Usage
"[441] A _double entendre_ -- with allusion to the posture in sexual intercourse known among the Greeks as [Greek: hippos], in Latin 'equus,' the horse, where the woman mounts the man in reversal of the ordinary position."