In boxing/martial arts: a technique done
by the foremost bodily weapon
(99% of the time, the foremost fist). The strike
is linear and the power is not the best stopping technique
due to limited
displacement of weight in the time executed. It is often
a "feeler" technique
designed to 'stun', or 'follow up' with another technique
(usually the cross-punch).
More power can be mustered with the strike
if the hips are stabilized, the shoulders displaced
forwards, and the feet grounded from their footwork. This is subject to the art and the user, but a jab can muster more of the body than
simply the arm's extension and muscle.
A jab can also be a foot strike
with the frontal foot
in a sideways
stance that "pokes" at the opponent
with the intent of fending them off, or causing "stunning" pain to the shin, groin, abdomen, or higher targets. This "foot
fencing" is designed to follow up with another technique
or to buy time.