cayenne pepper

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An orange-red to dark red condiment consisting of the ground ripe fruits of any of several pungent varieties of capsicum.

from The Century Dictionary.

• noun See pepper.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun Any of several very hot chilli peppers.
• noun A powder condiment or spice formed from the dried chilli pepper varieties above.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun plant bearing very hot and finely tapering long peppers; usually red
• noun a long and often twisted hot red pepper
• noun ground pods and seeds of pungent red peppers of the genus Capsicum