Source : Webster's Revised Unabridged Dictionary (1913)

Pinniped \Pin"ni*ped\, n. [L. pinna feather, fin + pes, pedis, a
   foot: cf. F. pinnip[`e]de.] (Zo["o]l.)
   (a) One of the Pinnipedia; a seal.
   (b) One of the Pinnipedes.

Source : WordNet®

pinniped
     n : aquatic carnivorous mammal having a streamlined body
         specialized for swimming with limbs modified as flippers
         [syn: {pinniped mammal}, {pinnatiped}]