Source : Webster's Revised Unabridged Dictionary (1913)

Biped \Bi"ped\, a.
   Having two feet; two-footed.

         By which the man, when heavenly life was ceased, Became
         a helpless, naked, biped beast.          --Byrom.

Biped \Bi"ped\, n. [L. bipes; bis twice + pes, pedis, ?oot: cf.
   F. bip[`e]de.]
   A two-footed animal, as man.

Source : WordNet®

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

biped
     n : an animal with two feet