a migratory baleen whale, Balaenoptera musculus, mostly of oceans and seas in the Southern Hemisphere, growing to a length of 100 feet (30.5 meters) and having a furrowed, slate-blue skin mottled with lighter spots, in some seas acquiring a yellowish coating of diatoms on the underside: the largest mammal ever known, it is now endangered.
the largest mammal: a widely distributed bluish-grey whalebone whale, Sibbaldus (or Balaenoptera) musculus, closely related and similar to the rorquals: family Balaenopteridae Also called sulphur-bottom
a small duck, Anas discors, inhabiting ponds and rivers of North America, having a dull-brown mottled body and grayish-blue patches on the wings. Historical Examples Poachers and Poaching John Watson Ducks at a Distance Robert W. Hines The Journals of Lewis and Clark Meriwether Lewis and William Clark The Journals of Lewis and Clark Meriwether […]
a composite plant, Aster cordifolius, of North America, having heart-shaped leaves and pale-blue flowers.