Hexagon

from WordNet (r) 3.0 (2006)

hexagon
    n 1: a six-sided polygon

from The Collaborative International Dictionary of English v.0.48

Hexagon \Hex"a*gon\, n. [L. hexagonum, Gr. ? six-cornered; "e`x
   six (akin to E. six) + ? angle.] (Geom.)
   A plane figure of six angles.
   [1913 Webster]

   {Regular hexagon}, a hexagon in which the angles are all
      equal, and the sides are also all equal.
      [1913 Webster]