Dictionary![]() ![]() trig'ger fin"ger1. any finger, usually the forefinger, that presses the trigger of a gun. 2. either forefinger, depending on which hand is dominant. 3. Pathol.difficulty in straightening or bending a ring finger, caused by inflammation and thickening of its tendon. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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