‖Mo‐noc″e‐ros (?), n. [L., fr. Gr. �; μόνοσ alone, single + κέρασ 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.