monoceros
Webster's Dictionary (GCIDE)
Monoceros \Mo*noc"e*ros\, n. [L., fr. Gr. ?; mo`nos alone, single + ke`ras horn.]
1.A one-horned creature; a unicorn; a sea monster with one horn. [1913 Webster]
Mighty monoceroses with immeasured tails.— Spenser.[1913 Webster]
2.(Astron.) The Unicorn, a constellation situated to the east Orion. [1913 Webster]