noun. The odontoid vertebra or axis; the second cervical vertebra: so called from the odontoid or tooth-like process which forms a pivot about which the atlas turns. See cut under axis.

"A spiky design that looks like teeth (I don't know if you knew this, but vagina dentata is Latin for "sexypants.")"

Keith  Murdock  Orphic  aetiological  carpetbagger