Quick definitions from WordNet (jab)
▸ noun: a quick short straight punch
▸ noun: a sharp hand gesture (resembling a blow) ("He warned me with a jab with his finger")
▸ noun: the act of touching someone suddenly with your finger or elbow
▸ verb: poke or thrust abruptly ("He jabbed his finger into her ribs")
▸ verb: strike or punch quick and short blows
▸ verb: stab or pierce ("He jabbed the piece of meat with his pocket knife")
▸ Also see jab
▸ noun: a quick short straight punch
▸ noun: a sharp hand gesture (resembling a blow) ("He warned me with a jab with his finger")
▸ noun: the act of touching someone suddenly with your finger or elbow
▸ verb: poke or thrust abruptly ("He jabbed his finger into her ribs")
▸ verb: strike or punch quick and short blows
▸ verb: stab or pierce ("He jabbed the piece of meat with his pocket knife")
▸ Also see jab