To push or hit something forcefully and quickly, often with a thin or sharp object. (Cambridge Dictionary)
To make quick forceful hits with your fist (=closed hand) when boxing. (Cambridge Dictionary)
To kick a ball hard and quickly. (Cambridge Dictionary)
If you jab one thing into another, you push it there with a quick, sudden movement and with a lot of force. (Collins Dictionary)
A jab is a sudden, sharp punch. (Collins Dictionary)
A jab is an injection of something into your blood to prevent illness. (Collins Dictionary)
To pierce with or as if with a sharp object: Stab. (Merriam – Webster)
Develop Boxing Jab Technique.