caster sugar 
(also castor sugar)
noun [mass noun] British
Finely granulated white or pale golden sugar.In a bowl mix 200g medium desiccated coconut, 50g golden caster sugar and 1 egg white....
- When the colour is exactly right, I will stir in exactly one rounded teaspoonful of golden caster sugar.
- Put the cream cheese, mascarpone, caster sugar, eggs and the extra yolk in the basin of a food mixer (you will need the beater attachment).
Origin
Mid 19th century: so named because it was suitable for use in a castor (see castor1 (sense 2)).
- disperse
- disperser
- dispersible
- dispersion
- dispersive
- dispirit
- dispirited
- dispiritedly
- dispiritedness
- dispiriting
- dispiritingly
- displace
- displaced person
- displacement
- displacement activity
- displacement pump
- displacement ton
- displacer
- display
- display ad
- display cabinet
- display case
- displayed
- displayer
- display type