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2 definitions found

From: Webster's Revised Unabridged Dictionary (1913)

 Ror·qual n.  Zool. A very large North Atlantic whalebone whale (Physalus antiquorum, or Balaenoptera physalus). It has a dorsal fin, and strong longitudinal folds on the throat and belly. Called also razorback.
 Note: ☞ It is one of the largest of the whales, somethimes becoming nearly one hundred feet long, but it is more slender than the right whales, and is noted for its swiftness. The name is sometimes applied to other related species of finback whales.
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From: WordNet (r) 2.0

 Balaenoptera physalus
      n : large flat-headed whalebone whale having deep furrows along
          the throat; of Atlantic and Pacific [syn: finback, finback
           whale, fin whale, common rorqual]