v. t.1.To turn over.
References in periodicals archive ?
Martin Dooley, of Character Boats, of Scarisbrick, West Lancashire, who unveiled his Whammel yacht at the show, said: "Cancelling the Liverpool Boat Show was a big, big blow.
The long-keel, clinkerstyle whammel fishing boats were once a common sight on the River Lune and Morecambe Bay a century ago.