Source : Webster's Revised Unabridged Dictionary (1913)

Antler \Ant"ler\, n. [OE. auntelere, OF. antoillier, andoiller,
   endouiller, fr. F. andouiller, fr. an assumed LL.
   antocularis, fr. L. ante before + oculus eye. See {Ocular}.]
   (Zo["o]l.)
   The entire horn, or any branch of the horn, of a cervine
   animal, as of a stag.

         Huge stags with sixteen antlers.         --Macaulay.

   Note: The branch next to the head is called the brow antler,
         and the branch next above, the bez antler, or bay
         antler. The main stem is the beam, and the branches are
         often called tynes. Antlers are deciduous bony (not
         horny) growths, and are covered with a periosteum while
         growing. See {Velvet}.

   {Antler moth} (Zo["o]l.), a destructive European moth
      ({Cerapteryx graminis}), which devastates grass lands.

Source : WordNet®

antler
     n : deciduous horn of a member of the deer family