from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A mythical serpent having a head at each end of its body, able to move in either direction.
- n. Amphisbaena A genus of lizards, native to the Americas, having extremities which are very similar.
From Latin amphisbaena, from Ancient Greek ἀμφίσβαινα, from ἀμφίς ‘both ways’ + βαίνειν ‘to go’. (Wiktionary)