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Meaning of trigger finger

trig'ger fin"ger

Pronunciation: [key]
  1. any finger, usually the forefinger, that presses the trigger of a gun.
  2. either forefinger, depending on which hand is dominant.
  3. 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.