Definition of flinch

• v. i. - To withdraw from any suffering or undertaking, from pain or danger; to fail in doing or perserving; to show signs of yielding or of suffering; to shrink; to wince; as, one of the parties flinched from the combat.
• v. i. - To let the foot slip from a ball, when attempting to give a tight croquet.
• n. - The act of flinching.