biddy /ˈbɪdi/ noun6 •(offensive) A woman, especially an old woman; especially one regarded as fussy or mean or a gossipy busybody.That Mich. drag Loretta sent me about 10 pictures of her so I wouldn't think her a "decrepit old lady." But too bad—she looked like someone's bitty aunt. — 1974 •A name used in calling a hen or chicken, often as "biddy-biddy-biddy".Ay, biddy, come with me. — 1601 •(offensive) An Irishwoman. •[in the plural] (slang) Breasts.It ain't like you ain't never seen these tig ole biddies before. — 2005 •An attractive girl. •(informal, no longer used) An Irish maidservant. formsbiddies