is the highly pungent spice made from the ground seeds of the chili pepper.
The name cayenne likely came from the Tupi language, spoken by the people of the Amazon basin.
Since it sounded like Cayenne, the name of a place in the former French Guiana, it was commonly supposed to be that particular name; and it was further supposed, that the name was given because the spice came originally from that area.
What is now marketed as cayenne pepper does not come from Cayenne, French Guiana, but from India, Africa, Mexico, China, Japan, and Louisiana. However, Cayenne is not grown in Latin America today.
A superior kind of cayenne is supposedly from Nepal and exported from there in tins.
See also the medicinal properties of cayenne.