bangbangbangs2noun1a sudden very loud noise: He shut the door with a bang.2a short, strong knock or hit, especially one that causes pain and injury: He fell and got a bang on the head.3bangs (plural) American English for fringe(1)bangbangbangsbangedbanging1verb (bangs, banging, banged)to make a loud noise by hitting something hard or by closing something: He banged his head on the ceiling.Don't bang the door!