amphisbaena, ae, f., = ἀμφίσβαινα,
a kind of serpent in Libya which can move either backwards or forwards , Plin. 8, 23, 35, § 85; Luc. 9, 719.
·noun A fabled serpent with a head at each end, moving either way. II. Amphisbaena ·noun A genus of...
Webster's Dictionary of the English Language