Source : Webster's Revised Unabridged Dictionary (1913)

Saw palmetto \Saw" pal*met"to\
   See under {Palmetto}.



   {Royal palmetto}, the West Indian {Sabal umbraculifera}, the
      trunk of which, when hollowed, is used for water pipes,
      etc. The leaves are used for thatching, and for making
      hats, ropes, etc.

   {Saw palmetto}, {Sabal serrulata}, a native of Georgia, South
      Carolina, and Florida. The nearly impassable jungle which
      it forms is called palmetto scrub.

Source : WordNet®

saw palmetto
     n : small hardy clump-forming spiny palm of southern United
         States [syn: {scrub palmetto}, {Serenoa repens}]