Source : Webster's Revised Unabridged Dictionary (1913)

Bicorn \Bi"corn\, Bicorned \Bi"corned\, Bicornous \Bi*cor"nous\,
   a. [L. bicornis; bis twice + cornu horn: cf. F. bicorne. Cf.
   {Bickern}.]
   Having two horns; two-horned; crescentlike.

Source : WordNet®

bicorn
     n : a cocked hat with the brim turned up to form two points
         [syn: {bicorne}]

bicorn
     adj : having two horns or horn-shaped parts; "a bicornuate uterus"
           [syn: {bicorned}, {bicornate}, {bicornuate}, {bicornuous}]