Pump the jab Share definition Flag A term relating to combat fighting in which you are constantly punching with your lead hand over and over again. "My coach told me I need to pump the jab more so I can do more damage to my opponent." Pump the jab by Jkjam01 September 8, 2025 0 0 Get merch Get the Pump the jab mug. Buy Now — $32.95 See more merch