jab
noun
a sharp hand gesture (resembling a blow)
“he warned me with a jab with his finger”
“he made a thrusting motion with his fist”
a quick short straight punch
the act of touching someone suddenly with your finger or elbow
“she gave me a sharp dig in the ribs”
Synonymsdig
verb
poke or thrust abruptly
“he jabbed his finger into her ribs”
strike or punch with quick and short blows
stab or pierce
“he jabbed the piece of meat with his pocket knife”
Synonymsstab
Source: WordNet 3.1, Princeton University