Source : Webster's Revised Unabridged Dictionary (1913)

Aquiline \Aq"ui*line\ (?; 277), a. [L. aquilinus, fr. aquila
   eagle: cf. F. aquilin. See {Eagle}. ]
   1. Belonging to or like an eagle.

   2. Curving; hooked; prominent, like the beak of an eagle; --
      applied particularly to the nose

            Terribly arched and aquiline his nose. --Cowper.

Source : WordNet®

aquiline
     adj : curved down like an eagle's beak [syn: {hooked}]