Lady  n. (pl. -ies) 1 a woman regarded as being of superior social status or as having refined manners. B (lady) title of peeresses, female relatives of peers, the wives and widows of knights, etc. 2 (often attrib.) Woman; female (ask that lady; lady butcher). 3 colloq. Wife, girlfriend. 4 ruling woman (lady of the house). 5 (the ladies or ladies') women's public lavatory. [old english, = loaf-kneader]