cinnamon

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

• noun The dried aromatic inner bark of certain tropical Asian trees of the genus Cinnamomum, especially C. verum and cassia (C. aromaticum), often ground and used as a spice.
• noun A tree yielding this bark.
• noun A light reddish brown.
• adjective Flavored with cinnamon.
• adjective Of a light reddish brown.

from The Century Dictionary.

• noun A tree of the genus Cinnamomum, especially C. Zeylanicum.
• noun The inner bark ot Cinnamomum Zeylanicum.
• Of the color of cinnamon; light reddish-brown.

from the GNU version of the Collaborative International Dictionary of English.

• noun The inner bark of the shoots of Cinnamomum Zeylanicum, a tree growing in Ceylon. It is aromatic, of a moderately pungent taste, and is one of the best cordial, carminative, and restorative spices.
• noun Cassia.
• noun (Min.) a variety of garnet, of a cinnamon or hyacinth red color, sometimes used in jewelry.
• noun a colorless aromatic oil obtained from cinnamon and cassia, and consisting essentially of cinnamic aldehyde, C6H5.C2H2.CHO.
• noun See Canella.

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

• noun countable A small evergreen tree native to Sri Lanka and southern India, Cinnamomum verum or Cinnamomum zeylanicum, belonging to the family Lauraceae.
• noun Several related trees, notably the Indonesian cinnamon (Cinnamomum burmannii) and Chinese cinnamon or cassia (Cinnamomum aromaticum or Cinnamomum cassia).
• noun uncountable A spice from the dried aromatic bark of the cinnamon tree, either rolled into strips or ground into a powder. The word is commonly used as trade name for spices made of any of the species above. The product made of Cinnamomum verum is sometimes referred to as true cinnamon.
• noun countable A yellowish-brown colour, the color of cinnamon.
• adjective Containing cinnamon, or having a cinnamon taste.
• adjective Of a yellowish-brown colour.

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

• noun spice from the dried aromatic bark of the Ceylon cinnamon tree; used as rolled strips or ground
• noun aromatic bark used as a spice
• noun tropical Asian tree with aromatic yellowish-brown bark; source of the spice cinnamon