Wiktionary
arm-wrestle
n. A physical sport or game in which two contestants each rest an arm on a single surface by the elbow only and push on each other's locked hands, until the loser is unable to keep his arm up anywhere in the air as the winner forces it down on the surface. vb. to compete in an arm-wrestle.
Usage examples of "arm-wrestle".
The Archchancellor had arm-wrestled with the Librarian for a bet and, although of course he hadn't won, still had his arm afterwards.
Somehow, we seem to have the Battle of the Sexes down to a friendly arm-wrestle.
With her wheat-blonde hair and jade-green eyes, she has the beauty that makes men arm-wrestle their buddies and perform swan dives from rickety piers.