axis vertebra axis of rotation • axis2 · · · Info · Definitions · Synonyms · Characters · · axis vertebra · · Text Common · · Latin · · Scripts 13 · · Length 5 · · Syllables Definitions · · · (noun) the 2nd cervical vertebra; serves as a pivot for turning the head. Synonyms: axis, axis vertebra. · · Noun Definition 1 Synonyms · · · axis · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 b latin small letter b U+0062 e latin small letter e U+0065 i latin small letter i U+0069 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 v latin small letter v U+0076 x latin small letter x U+0078