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Noun: sulfur bottom
Usage: N. Amer (elsewhere: sulphur bottom)
  1. Largest mammal ever known; bluish-grey migratory whalebone whale mostly of Southern Hemisphere
    - blue whale, Balaenoptera musculus, sulphur bottom [Brit, Cdn]

Derived forms: sulfur bottoms

Type of: baleen whale, whalebone whale

Part of: Balaenoptera, genus Balaenoptera

Nearest

sulfide
sulfisoxazole
sulfite
sulfonamide
sulfonate
sulfone
sulfonic acid
sulfonylurea
sulfur
sulfur bacteria
sulfur bottom
sulfur butterfly
sulfur dioxide
sulfur hexafluoride
sulfur mine
sulfur mustard
sulfur oxide
sulfur paintbrush
sulfureous
sulfurette
sulfuretted