- The dense, soft, often curly hair forming the coat of sheep and certain other mammals, such as the goat and alpaca, consisting of cylindrical fibers of keratin covered by minute overlapping scales and much valued as a textile fabric. (noun)
- A material or garment made of this hair. (noun)
- The furry hair of some insect larvae, such as the caterpillar. (noun)
- A filamentous or fibrous covering or substance suggestive of the texture of true wool. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.