Search Result for "axis vertebra":
Wordnet 3.0

NOUN (1)

1. the 2nd cervical vertebra; serves as a pivot for turning the head;
[syn: axis, axis vertebra]



WordNet (r) 3.0 (2006):

axis vertebra
    n 1: the 2nd cervical vertebra; serves as a pivot for turning
         the head [syn: axis, axis vertebra]