Source : Webster's Revised Unabridged Dictionary (1913)

Bipedal \Bip"e*dal\, a. [L. bipedalis: cf. F. bip['e]dal. See
   {Biped}, n.]
   1. Having two feet; biped.

   2. Pertaining to a biped.

Source : WordNet®

bipedal
     adj : having two feet [syn: {biped}, {two-footed}] [ant: {quadrupedal},
            {quadrupedal}]