bearskin

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

• noun Something, such as a rug, made from the skin of a bear.
• noun A tall military hat made of black fur.

from The Century Dictionary.

• noun The skin of a bear.
• noun A coarse shaggy woolen cloth for overcoats.
• noun A tall cap made of black fur forming part of the uniform of some military bodies, as of the Guards in the British army and of soldiers of various organizations elsewhere.

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

• noun The skin of a bear.
• noun A coarse, shaggy, woolen cloth for overcoats.
• noun A cap made of bearskin, esp. one worn by soldiers.

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

• noun The pelt of a bear, especially when used as a rug.
• noun A tall ceremonial hat worn by members of some British regiments for ceremonial occasions; a busby.
• noun dated A coarse, shaggy, woollen cloth for overcoats.

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

• noun tall hat; worn by some British soldiers on ceremonial occasions
• noun the pelt of a bear (sometimes used as a rug)