one who has a part in anything with an other; a partaker; an associate; a sharer. "partner of his fortune." shak. hence: (a) a husband or a wife. (b) either one of a couple who dance together. (c) one who shares as a member of a partnership in the management, or in the gains and losses, of a business.-an associate in any business or occupation; a member of a partnership. see partnership.-a framework of heavy timber surrounding an opening in a deck, to strengthen it for the support of a mast, pump, capstan, or the like.-to associate, to join.