Colloq. Abbreviation of JOCKEY.
1826. Sporting Mag., XVIII. 385. A neat horseman, and quite at the top of the tree amongst Northern jocks.
1856. H. H. Dixon, Post & Paddock, xii. 211. Many clever young jocks … have ridden as many races by the time they are twenty.
1894. J. K. Fowler, Recoll. Old Country Life, xv. 176. I don’t think he performed as a gentleman jock over that celebrated course.
