Definition of black whale:
(n) :
Any whale of three species:
(n) :
a sperm whale (Physeter catodon, syn. Physeter macrocephalus (family Physeteridae))
(n) :
a right whale or northern right whale (family Balaenidae)
(n) :
North Atlantic right whale (Eubalaena glacialis)
(n) :
North Pacific right whale (Eubalaena japonica)
(n) :
Any cetacean blackfish.