Meaning of “sugar” - Learner’s Dictionary

sugar

noun us uk /ˈʃʊɡər/
SUBSTANCE [ U ]

A1 a very sweet substance used to give flavour to food and drinks:

coffee with milk and sugar

More examples

AMOUNT [ C ]

a spoon of sugar in a cup of tea or coffee:

He likes two sugars in his tea.

(Definition of “sugar” from the Cambridge Learner’s Dictionary © Cambridge University Press)