toggle

Definition
(noun) any instruction that works first one way and then the other; it turns something on the first time it is used and then turns it off the next time Definition
(noun) a hinged switch that can assume either of two positions Definition
(noun) a fastener consisting of a peg or pin or crosspiece that is inserted into an eye at the end of a rope or a chain or a cable in order to fasten it to something (as another rope or chain or cable) Definition
(verb) provide with a toggle or toggles Definition
(verb) fasten with, or as if with, a toggle Definition
(verb) release by a toggle switch