sulfur bottom

English Thesaurus

1. largest mammal ever known; bluish-grey migratory whalebone whale mostly of southern hemisphere (noun.animal)

hypernym	:	baleen whale, whalebone whale,
definition	:	whale with plates of whalebone along the upper jaw for filtering plankton from the water (noun.animal)

member meronym	:	balaenoptera, genus balaenoptera,
definition	:	type genus of the Balaenopteridae (noun.animal)