Word: carbs
Clipping of carburettor / carburetor. Example: This is what controls the flow of fuel into the carb.
(nutrition) A sugar, starch, or cellulose that is a food source of energy for an animal or plant. Example: These microbes are primarily responsible for breaking down cellulose and other carbohydrates into volatile fatty acids (VFAs).
(by extension, metonym) Any food rich in starch or other carbohydrates. Example: I'm cutting down on carbohydrates like bread and pasta.
You can find a list of possible crossword clues for CARBS below.