laugher UK /ˈlɑːfə/US /ˈlæfɚ/ noun3 •One who laughs.He and his companions[…] were exchanging jokes with that sort of ostentatious laughter which implies a desire to prove that the laugher is not mortified though some people might suspect it. — 1862 •A game in which an opponent is defeated by a sizable margin; a blowout. •A variety of the domestic pigeon. formslaughers