1
: the soft, thick hair of sheep and some other animals
2
: cloth or clothing made of wool
She doesn't like wool because it can be itchy.
virgin wool [=wool that is being used in fabric for the first time]
—often used before another nounwool socks
a wool blanket/sweater
3
chiefly British
: long, thick thread made of wool and used for knitting
a ball of wool [=(US) yarn]
Cite this Entry
“Wool.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/wool. Accessed 22 Jun. 2026.
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