n. One who or that which jobs, pecks, or stabs: used in composition: as, tree-jobber or wood-jobber (a woodpecker); nut-jobber (a nuthatch).n. One who does anything by the job; one who does small jobs or chance work.n. One who lets out or furnishes horses or carriages by the week or month; a job-master.n. One who purchases goods in bulk and resells them to smaller dealers; a middleman.n. On the London stock-exchange, a dealer in stocks and bonds on his own account; a stock-exchange operator to whom brokers sell, and from whom they buy, it being; contrary to stock-exchange etiquette for brokers to negotiate with each other; a middleman or intermediary acting between brokers.n. One who renders the discharge of a trust subservient to private ends; especially, an intriguer who turns public work to his own or his friends' advantage; hence, one who performs low or dirty work in office, politics, or intrigue.