wool (wo?ol)n.1. a. The dense, soft, often curly hair forming the coat of sheep and certain other mammals, such as the goat and alpaca, consisting of cylindrical strands of keratin covered by minute overlapping scales and much valued as a textile fiber.b. Fabric or yarn made of this hair.2. Hairy or downy material on a plant or animal, as on certain caterpillars.3. Filamentous or fibrous material similar to the wool of a sheep or other mammal.[Middle English wolle, from Old English wull.]wool adj.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.wool (w?l) n1. (Zoology) the outer coat of sheep, yaks, etc, which consists of short curly hairs2. (Textiles) yarn spun from the coat of sheep, etc, used in weaving, knitting, etc3. (Textiles) a. cloth or a garment made from this yarnb. (as modifier): a wool dress. 4. (Chemistry) any of certain fibrous materials: glass wool; steel wool. 5. (Hairdressing & Grooming) informal short thick curly hair6. (Botany) a tangled mass of soft fine hairs that occurs in certain plants7. dyed in the wool confirmed in one’s beliefs or opinions8. pull the wool over someone’s eyes to deceive or delude someone[Old English wull; related to Old Frisian, Middle Dutch wulle, Old High German wolla (German Wolle), Old Norse ull, Latin l?na and vellus fleece] ?wool-?like adjCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014wool (w?l) n. 1. the fine, soft, curly hair that forms the fleece of sheep and certain other animals. 2. yarn made of such wool. 3. a fabric or garment of such wool. 4. any finely fibrous or filamentous matter suggestive of the wool of sheep: steel wool. 5. any coating of short, fine hairs or hairlike processes, as on a caterpillar or a plant; pubescence. Idioms: pull the wool over someone’s eyes, to deceive or delude someone. [before 900; Middle English wolle, Old English wull(e), c. Middle Dutch, Middle Low German wulle, Old High German wolla, Old Norse ull, Gothic wulla; akin to Latin l?na, Skt ?r?? wool, Latin vellus fleece] wool?like`, adj. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.