What is the meaning of Fast_food?

Food that is served quickly, often standardized and pre-prepared.

A type of food that is quickly made, but of low nutritional value; junk food.

Anything standardized, quickly available, and inexpensive, often, of low value.

snack bar

fast food (type of meal that is often pre-prepared and served quickly)

fast food (type of meal that is often pre-prepared and served quickly)

Source: wiktionary.org