Am`phis*bæ"na (#), n. [L., fr. Gr. ; on both ends + to go.]
1.
A fabled serpent with a head at each end, moving either way.
Milton.
2. Zool.
A genus of harmless lizards, serpentlike in form, without legs, and with both ends so much alike that they appear to have a head at each, and ability to move either way. See Illustration in Appendix.
⇒ The Gordius aquaticus, or hairworm, has been called an amphisbæna; but it belongs among the worms.
© Webster 1913.