noun
cayenne
ky-EN/kaɪˈen/
A hot red pepper used as a spice.
Red cayenne peppers lie beside a bowl of the ground spice.

Etymology
Tupi kyynha named capsicum, connecting cayenne directly with the pepper plant and its pungent spice. Its association with the town of Cayenne was a mistake, not its origin.
In context
1 teaspoon of cayenne pepper. That's going to make it really hot.
More examples
- Too much cayenne makes the sauce intensely hot.
- The spice jar contains ground cayenne.
- Fresh cayenne peppers ripen on the sunny windowsill.
Similar words
- paprika
- A pepper spice often milder and used for color.
- chili powder
- Can be a seasoning blend rather than ground cayenne alone.