ostleress|ˈɒslərɪs| [f.prec. + -ess.] A woman or girl who acts as ostler. 1639Fuller Holy War i. iv. (1647) 5 Jews and Pagans slander her to have been ‘stabularia’, an ostleresse or a she stable groom.1847Tennyson Princ. i. 223 A plump-arm'd Ostleress.