1.  cayenne pepper(n = noun.plant) capsicum annuum longum, cayenne, chili pepper, chilli pepper, jalapeno, long pepper - plant bearing very hot and finely tapering long peppers; usually red;
is a kind of capsicum, capsicum pepper plant, pepper
has parts: chile, chili, chili pepper, chilli, chilly
is a member of capsicum, genus capsicum

2.  cayenne pepper(n = noun.food) cayenne, red pepper - ground pods and seeds of pungent red peppers of the genus Capsicum;
is a kind of flavorer, flavoring, flavourer, flavouring, seasoner, seasoning

3.  cayenne pepper(n = noun.food) cayenne - a long and often twisted hot red pepper;
is a kind of chile, chili, chili pepper, chilli, chilly

bell pepper, betel pepper, bird pepper, black pepper, brazilian pepper tree, capsicum pepper plant, cayenne, cayenne jasmine, cherry pepper, chili pepper, chilli pepper, common pepper, cone pepper, garden pepper cress, globe pepper, green pepper, guinea pepper, hot pepper, jalapeno pepper, java pepper, long pepper, madagascar pepper, melagueta pepper, negro pepper, pepper, pepper box, pepper bush, pepper dulse, pepper family, pepper grass, pepper grinder, pepper mill, pepper pot, pepper root, pepper sauce, pepper shaker, pepper shrub, pepper spray, pepper steak, pepper tree, pepper vine, philadelphia pepper pot, red pepper, sweet pepper, sweet pepper plant, tabasco pepper, true pepper, wall pepper, water pepper, white pepper