The Collaborative International Dictionary of English v.0.48:
Bipedal \Bip"e*dal\, a. [L. bipedalis: cf. F. bip['e]dal. See Biped, n.] 1. Having two feet; biped. [1913 Webster] 2. Pertaining to a biped. [1913 Webster]WordNet (r) 3.0 (2006):
bipedal adj 1: having two feet [syn: bipedal, biped, two-footed] [ant: four-footed, quadruped, quadrupedal]