Ceylon chili powder typically refers to a type of chili powder made from chilies grown in Sri Lanka, which was formerly known as Ceylon. These chilies are often unique in flavor and heat profile compared to other chili varieties. Ceylon chili powder can vary in spiciness depending on the type of chili peppers used and the method of processing. 

It's commonly used in Sri Lankan cuisine to add heat and flavor to various dishes, such as curries, sambols, and seafood preparations.