TRIGGER

I. noun see: trek Date: 1621 1. a piece (as a lever) connected with a catch or detent as a means of releasing it, a similar movable part by which a mechanism is actuated , something that acts like a mechanical ~ in initiating a process or reaction, ~ adjective ~ed adjective II. verb (~ed; ~ing) Date: 1916 transitive verb 1. to release or activate by means of a ~, to cause the explosion of , to initiate, actuate, or set off by a ~ , intransitive verb to release a mechanical ~