noun.
Any of various carnivorous aquatic mammals of the suborder (or superfamily) Pinnipedia, having flippers as organs of locomotion and including the seals and the walrus.
The Century Dictionary and Cyclopedia
Fin-footed, in any sense; having feet like fins or flippers. Specifically
noun.
A member of the Pinnipedes or Pinnipedia: opposed to fissiped.
the GNU version of the Collaborative International Dictionary of English
noun.
Any of various large marine mammals belonging to the superfamily (formerly considered a suborder) Pinnipedia comprising walruses, eared seals and earless seals.
adjective.
Pertaining to or similar to such a mammal.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippers