noun
(historical) The mistress of a household.
A woman of breeding or higher class, a woman of authority.
The feminine of lord.
A title for someone married to a lord or gentleman.
A title that can be used instead of the formal terms of marchioness, countess, viscountess, or baroness.
(polite or used by children) A woman: an adult female human.
(in the plural) A polite reference or form of address to women.
(slang) Used to address a female.
(informal) A wife or girlfriend; a sweetheart.
A woman to whom the particular homage of a knight was paid; a woman to whom one is devoted or bound.
(slang) A queen (the playing card).
(attributive, with a professional title) Who is a woman.
(Wicca) Alternative form of Lady.
(archaic) gastric mill, the triturating apparatus in the stomach of a lobster, consisting of calcareous plates; so called from a fancied resemblance to a seated female figure.
(UK, slang) A five-pound note. (Rhyming slang, Lady Godiva for fiver.)
(slang, chiefly in the plural) A woman’s breast.
(chess, slang, rare) A queen.
verb
To address as “lady”.