Merriam-Webster's Collegiate® Dictionary, 11th Edition
JOG
I. verb (jogged; jogging)
Etymology: probably alteration of shog
Date: 1548
transitive verb to give a slight shake or push to ; nudge , to rouse to alertness , to cause (as a horse) to go at a jog, to align the edges of (piled sheets of paper) by hitting or shaking against a flat surface, intransitive verb to move up and down or about with a short heavy motion ,
2. to run or ride at a slow trot, to go at a slow, leisurely, or monotonous pace ; trudge , jogger noun
II. noun
Date: 1635
a slight shake ; nudge ,
2. a movement, pace, or instance of jogging (as for exercise), a horse's slow measured trot,
III. noun
Etymology: probably alteration of 2jag
Date: 1715
1. a projecting or retreating part (as of a line or surface), the space in the angle of a jog, a brief abrupt change in direction,
IV. intransitive verb (jogged; jogging)
Date: 1953
to make a jog