The Collaborative International Dictionary of English v.0.48:

Nasicornous \Nas`i*cor"nous\ (n[a^]z`[i^]*k[^o]r"n[u^]s), a. [L.
   nasus nose + cornu horn: cf. F. nasicorne.] (Zool.)
   Bearing a horn, or horns, on the nose, as the rhinoceros.
   [1913 Webster]