The American Heritage® Dictionary of the English Language, 4th Edition
adj. Of or belonging to the Pinnipedia, a suborder of carnivorous aquatic mammals that includes the seals, walruses, and similar animals having finlike flippers as organs of locomotion.
n. Any of various large marine mammals belonging to the superfamily (formerly considered a suborder) Pinnipedia comprising walruses, eared seals and earless seals.
adj. Pertaining to or similar to such a mammal.
the GNU version of the Collaborative International Dictionary of English
n. One of the Pinnipedia; a seal.
n. One of the Pinnipedes.
The Century Dictionary and Cyclopedia
Fin-footed, in any sense; having feet like fins or flippers. Specifically
n. A member of the Pinnipedes or Pinnipedia: opposed to fissiped.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. aquatic carnivorous mammal having a streamlined body specialized for swimming with limbs modified as flippers
Word Usage
"He also said sometimes the cast will be distracted by whales or seals when filming (he totally used the word pinniped!)."