The leading woman in a specified field of endeavor. / Alternative spelling of First Lady

The wife of the chief executive of a nation; especially the wife of the President of a country; or a woman (e.g. a relative) who takes on similar public duties, as when the chief executive is unmarried.

(Britain) A female school crossing attendant.

(idiomatic) A pure gamble with highly divergent outcomes.

Used other than figuratively or idiomatically: young lady. / A term of endearment or admonishment by adults for a young girl.

The herb Alchemilla vulgaris, or any plant in the genus Alchemilla.

The cuckoo-flower, Cardamine pratensis.

Any of certain cryptic patterned butterflies of genus Vanessa (family Nymphalidae), especially Vanessa cardui. / (botany) The painted trillium (Trillium undulatum), a forest wildflower of North America.

(folklore) A female ghost dressed in white, who is associated with local legends of tragedy. / A cocktail made from creme de menthe, Cointreau, lemon juice and an egg white

(US) A dinner lady.