Freebase(0.00 / 0 votes)Rate this definition: Imagism was a movement in early 20th-century Anglo-American poetry that favored precision of imagery and clear, sharp language. It has been described as the most influential movement in English poetry since the activity of the Pre-Raphaelites.
The Spring Trigger. A spring trigger is actually a small spring with a threaded end that replaces the hard trigger on specially made index-triggered releases. Because it bends when you pull it, the spring is very difficult to punch. Your only recourse is to keep pulling as you continue to aim at the spot you want to hit.
Trigger Mechanism. in physiology and biology, an act or stimulus that causes the abrupt shifting of a cell, organ, or entire organism from one functional state to another. For example, the trigger action of a peripheral nerve causes a muscle to contract. In this case, the synaptic potential, that is, the minute electromotive force that arises at the site of contact between a nerve and muscle fiber, functions as a spontaneous trigger mechanism.