(1) A life buoy in the form of a ring with short breeches for support; used to transfer people from a ship
WiktionaryText
Noun
a ringlifebuoy, fitted with canvas breeches, rigged between ship and shore, for rescuing seamen when a ship is in danger of breaking up; also used for transferring people from ship to ship at sea
Also colloqually called: britches buoy or britches boy.--Pete 04:13, 9 May 2008 (UTC)