Adjective
Having a backbone, or vertebral column, containing the spinal marrow, as man, quadrupeds, birds, amphibia, and fishes.
Contracted at intervals, so as to resemble the spine in animals.
Having movable joints resembling vertebrae; -- said of the arms ophiurans.
Of or pertaining to the Vertebrata; -- used only in the form vertebrate.
Source: Webster's dictionary