The Collaborative International Dictionary of English v.0.48:

Spondyl \Spon"dyl\, Spondyle \Spon"dyle\ (sp[o^]n"d[i^]l), n.
   [L. spondylus, Gr. ?, ?: cf. F. spondyle.] (Anat.)
   A joint of the backbone; a vertebra.
   [1913 Webster]