The Collaborative International Dictionary of English v.0.48:

Vertebrate \Ver"te*brate\, Vertebrated \Ver"te*bra`ted\, a. [L.
   vertebratus.]
   1. (Anat.) Having a backbone, or vertebral column, containing
      the spinal marrow, as man, quadrupeds, birds, amphibia,
      and fishes.
      [1913 Webster]

   2. (Bot.) Contracted at intervals, so as to resemble the
      spine in animals. --Henslow.
      [1913 Webster]

   3. (Zool.) Having movable joints resembling vertebrae; --
      said of the arms of ophiurans.
      [1913 Webster]

   4. (Zool.) Of or pertaining to the Vertebrata; -- used only
      in the form vertebrate.
      [1913 Webster]