trigger finger noun

1. The finger used to pull the trigger on a gun, ie the forefinger of the dominant hand
2. A condition in which a finger is subject to involuntary muscular spasm, esp where it cannot be straightened when unclenching the fist (medicine)

triggˈerfish noun

A fish of the family Balistidae, having on the first dorsal fin a large front spine which can be locked upright by a second smaller spine

trigger-happˈiness noun

triggˈer-happy adjective

1. Over-ready to shoot (lit and figurative)
2. Irresponsibly willing to take the risk of beginning a fight or a war

triggˈerman noun

1. A gangster's bodyguard
2. The man who actually fires a shot

trigger point noun

One of a number of specific points or sites on the body at which acupuncture, heat, injection or massage may be applied to treat (sometimes remote) pain