(intransitive) to make a loud deep raucous cry like that of a bull; roar
to shout (something) unrestrainedly, as in anger or pain; bawl
the characteristic noise of a bull
a loud deep sound, as of pain or anger
C14: probably from Old English bylgan; related to bellan to bell²
Saul. 1915–2005, US novelist, born in Canada. His works include Dangling Man (1944), The Adventures of Angie March (1954), Herzog (1964), Humboldt's Gift (1975), The Dean's December (1981), and Ravelstein (2000): Nobel prize for literature 1976
apparently from Old English bylgan "to bellow," from PIE root *bhel- (4) "to sound, roar." Originally of animals, especially cows and bulls; used of human beings since c.1600. Related: Bellowed; bellowing. As a noun from 1779.