Source : Webster's Revised Unabridged Dictionary (1913)

Foxtail \Fox"tail`\, n.
   1. The tail or brush of a fox.

   2. (Bot.) The name of several kinds of grass having a soft
      dense head of flowers, mostly the species of {Alopecurus}
      and {Setaria}.

   3. (Metal.) The last cinders obtained in the fining process.
      --Raymond.

   {Foxtail saw}, a dovetail saw.

   {Foxtail wedging}. See {Fox wedge}, under {Fox}.

Source : WordNet®

foxtail
     n : grasses of the genera Alopecurus and Setaria having dense
         silky or bristly brushlike flowering spikes [syn: {foxtail
         grass}]