What does "cayenne" mean?

Cayenne: Cayenne pepper. Cayenne pepper. (a) (Bot.) A species of capsicum (C. frutescens) with small and intensely pungent fruit. (b) A very pungent spice made by drying and grinding the fruits or seeds of several species of the genus Capsicum, esp. C. annuum and C. Frutescens; -- Called also red pepper. It is used chiefly as a condiment.