Originally U.S. A soft drink such as soda water, used in a mixed drink; (also occasionally) an alcoholic beverage used in cocktails and other…

colloquial. A pink coloured drink. A drink of pink gin; (also) the bitters used to colour this drink. Cf. pink gin n. at compounds 2c.

A curled piece of lemon (or other citrus) peel used to flavour a drink. Also (colloquial) elliptical.

A soft drink intended for mixing with alcoholic drinks. Cf. mixer, n. 7a.