A life-buoy.

(Germanic paganism) A ring (particularly an arm ring) on which oaths are sworn.

Alternative spelling of ring pull

(idiomatic) To seem to be false or implausible; to be unconvincing.

To call a number of people by phone, usually a circle of friends, to organise something.

To return a phone call. / To make another phone call to the same person.

To sound clearly and loudly. / (telephony) To make a phone call from an internal phone system to a general telephone network number.

(finance); (video games) A win in a fighting game obtained by throwing one's opponent out of the arena.

(video games, transitive, intransitive) To throw (an opponent) out of the arena, thereby winning.

(idiomatic) To seem to be correct, or plausible