noun (n)

• predatory black-and-white toothed whale with large dorsal fin; common in cold seas(noun.animal)

  Synonym:
  killer, killer whale, orca, orcinus orca, sea wolf
  

  source: wordnet30
• slaty-grey blunt-nosed dolphin common in northern seas(noun.animal)

  Synonym:
  grampus griseus
  

  source: wordnet30
• A toothed delphinoid cetacean, of the genus Grampus, esp. G. griseus of Europe and America, which is valued for its oil. It grows to be fifteen to twenty feet long; its color is gray with white streaks. Called also cowfish. The California grampus is G. Stearnsii.(noun)

  source: webster1913