black whale
n 1: small dark-colored whale of the Atlantic coast of the
United States; the largest male acts as pilot or leader for
the school [syn: {pilot whale}, {black whale}, {common
blackfish}, {blackfish}, {Globicephala melaena}]
2: large whale with a large cavity in the head containing
spermaceti and oil; also a source of ambergris [syn: {sperm
whale}, {cachalot}, {black whale}, {Physeter catodon}]