1sug·ar 
/ˈʃʊgɚ/ noun
plural sug·ars /ˈʃʊgɚ/ noun 1 a [noncount] : a sweet substance usually in the form of white or brown crystals or white powder that comes from plants and is used to make foods sweeter
▪ Would you pass the sugar, please? ▪ Do you take sugar in your coffee? ▪ a lump/cube/packet of sugar — see also brown sugar, cane sugar, confectioners' sugar, maple sugar, powdered sugar
b [count] : the amount of sugar in one spoonful, lump, packet, etc.
▪ Coffee with two sugars and milk, please. 2 [count] technical : any one of various substances that are found in plants and that your body uses or stores for energy — usually plural ▪ Everyone's body metabolizes sugars differently. ▪ Simple sugars are easier to digest than complex sugars. 3 [noncount] informal : the amount of sugar present in a person's blood at a particular time
▪ Her sugar (level) is very high. —called also blood sugar 4 chiefly US, informal — used to address someone you like or love ▪ “Hey, sugar [=honey], how are you doing?”
▪ Would you pass the sugar, please? ▪ Do you take sugar in your coffee? ▪ a lump/cube/packet of sugar — see also brown sugar, cane sugar, confectioners' sugar, maple sugar, powdered sugar
b [count] : the amount of sugar in one spoonful, lump, packet, etc.
▪ Coffee with two sugars and milk, please.
▪ Her sugar (level) is very high. —called also blood sugar
