Boxing term for a quick, straight punch with the lead hand. Also used figuratively for a sharp verbal remark or a quick, light action.
He threw a fast jab at his opponent's face.
He threw a few light jabs to gauge his opponent's distance.
He threw a jab at his boss during the meeting.
The boxer kept throwing one jab after another from the start.
He took several jabs early in the round.
She got in a light jab at her boss.
He found an opening and landed a jab on his opponent.