- The definition of beaucoup is a slang expression that means many or much.
Ten million dollars is an example of beaucoup money.
beaucoup definition by Webster's New World
Origin: ; from beaucoup
beaucoup definition by American Heritage Dictionary
also boo·coo or boo·koo Chiefly Southern U.S.adjective
Origin: French : beau, bel, fine, handsome; see beau + coup, stroke; see coup.