Mo*noc"e*ros (?), n. [L., fr. Gr. ; alone, single + horn.]
1.
A one-horned creature; a unicorn; a sea monster with one horn.
Mighty monoceroses with immeasured tails.
Spenser.
2. Astron.
The Unicorn, a constellation situated to the east Orion.
© Webster 1913.