Source : Webster's Revised Unabridged Dictionary (1913)

Warm-blooded \Warm"-blood`ed\, a. (Physiol.)
   Having warm blood; -- applied especially to those animals, as
   birds and mammals, which have warm blood, or, more properly,
   the power of maintaining a nearly uniform temperature
   whatever the temperature of the surrounding air. See
   {Homoiothermal}.

Source : WordNet®

warm-blooded
     adj : having warm blood (in animals whose body temperature is
           internally regulated) [ant: {cold-blooded}]