- caster sugar
- nounvery finely granulated sugar that was formerly sprinkled from a castor• Syn: ↑castor sugar• Regions: ↑United Kingdom, ↑UK, ↑U.K., ↑Britain, ↑United Kingdom of Great Britain and Northern Ireland, ↑Great Britain• Hypernyms: ↑powdered sugar
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castor sugar or caster sugar nounWhite granulated sugar crushed to form fine grains• • •Main Entry: ↑castor* * *
caster sugar UK US noun [uncountable] britishwhite sugar in the form of very small grains, used especially in cooking* * *
white sugar in the form of very fine grains, used in cookingSee also: ↑castor sugarWord Origin:[caster sugar] mid 19th cent.: so named because it was suitable for use in a castor, a small container with holes in the top, used for sprinkling sugar.
Useful english dictionary. 2012.