sulfur bottom

Thesaurus

Noun

1.sulfur bottom - largest mammal ever known; bluish-grey migratory whalebone whale mostly of southern hemisphereBalaenoptera musculus, blue whalebaleen whale, whalebone whale - whale with plates of whalebone along the upper jaw for filtering plankton from the waterBalaenoptera, genus Balaenoptera - type genus of the Balaenopteridae