Merriam-Webster's Collegiate® Dictionary, 11th Edition
JAB
I. verb (jabbed; jabbing)
Etymology: alteration of job to strike
Date: 1827
transitive verb
1. to pierce with or as if with a sharp object ; stab , to poke quickly or abruptly ; thrust , to strike with a short straight blow, intransitive verb to make quick or abrupt thrusts with a sharp object, to strike a person with a short straight blow,
II. noun
Date: 1872
an act of jabbing