They are shaped like a big, round bells, which is why they're called bell peppers. Bell peppers are plant in the nightshade family, actually a type of fruit, but used as vegetables in the kitchen. They come in a variety of colors, including green, red, and yellow. They can be used in many different dishes.

Examples:

1. My favorite part of the meal was the meat stuffed bell pepper.
2. Can you pick out the yellow bell pepper at the store?
3. I chopped up a mix of red and yellow bell pepper to make a colorful salad for lunch.