finback

Definitions of finback
  1. noun
    large flat-headed whalebone whale having deep furrows along the throat; of Atlantic and Pacific
    synonyms: Balaenoptera physalus, common rorqual, fin whale, finback whale
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    type of:
    razorback, rorqual
    any of several baleen whales of the family Balaenopteridae having longitudinal grooves on the throat and a small pointed dorsal fin
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