carb
C2Pronunciation
UK
- /kɑːb/noun
US
- /ˈkɑrb/
Description
- carbohydrate (informal)
- sugars & starches
- diet/nutrition talk
- body's fuel
"Carb" is short for "carbohydrate," one of the three main macronutrients your body needs (along with protein and fat). Think of carbs as your body's primary fuel source—much like gasoline for a car. They come in many forms, from sugars in fruit and milk to the starches in bread, pasta, rice, and potatoes.
You'll often hear "carbs" (usually plural) discussed in the context of diet and nutrition. People might talk about "cutting carbs" to lose weight, counting carbs to manage blood sugar, or "carb-loading" before a marathon to build up energy reserves. But don't demonize them: many carbohydrate-rich foods—especially whole grains, fruits, vegetables, and legumes—are part of a balanced diet and can provide steady energy for everything you do, from thinking to running.
Carbohydrates, often shortened to "carbs," are organic compounds made of carbon, hydrogen, and oxygen—and they are a vital part of a healthy diet. They are your body's preferred source of energy. Think of it like this: when you eat carbs, your body breaks them down into glucose (a type of sugar), which is then used for immediate energy or stored for later use.
There are two main types of carbohydrates: simple and complex. Simple carbs—found in fruits, honey, and processed foods—provide a quick burst of energy but do not last long. Complex carbs—like those in whole grains, vegetables, and legumes—are digested more slowly, providing sustained energy and essential nutrients like fiber.
The term "carbs" is frequently used in discussions about weight management and athletic performance. "Low-carb diets" restrict carbohydrate intake to promote weight loss, while athletes often "carb-load" before major events to maximize their glycogen (stored glucose) levels.
However, it's important to remember that not all carbs are created equal. Choosing whole, unprocessed sources of carbohydrates is crucial for overall health. So, whether you are fueling a workout or simply powering through your day, understanding the role of carbs in your diet can help you make informed choices about what you eat.
Less commonly (especially in casual talk among mechanics and hobbyists), "carb" can also mean carburetor—the engine part that mixes fuel and air in many older cars, motorcycles, and small engines. In that sense you might hear things like "clean the carb" or "the bike has twin carbs."
Examples
- 1
Diet choices
I'm trying to eat fewer carbs at lunch, so I skipped the bread.
- 2
Running fuel
Pasta gives me enough carbs to get through a long run.
- 3
Nutrition label
This cereal is high in carbs but low in protein.
- 4
Medical diet
My doctor told me to count carbs more carefully with each meal.
Phrase
count carbs
track how much carbohydrate your food contains
- 5
Recipe version
We found a low-carb version of the recipe that still tastes good.
Phrase
low-carb
with less carbohydrate than usual
Forms and spellings
1 form open this card.
Main spelling
- carb