noun
(derogatory) A woman, especially an old woman; especially one regarded as fussy or mean or a gossipy busybody.
(uncommon) An attractive girl.
(archaic, colloquial) An Irish maidservant.
(by extension, derogatory) An Irishwoman.
A name used in calling a hen or chicken, often as "biddy-biddy-biddy".
adjective
(US) Alternative spelling of bitty (“very small”).
noun
(Internet slang, in the plural) Breasts.