Meaning of “wool” - Learner’s Dictionary

wool

noun [ U ] us uk /wʊl/
The sheep are famous for their fine wool.The wool of these sheep is used to make carpets.The coarse hair that covered wild sheep was replaced by a soft coat of wool.Their wool keeps the sheep warm even in the coldest winter.These sheep have extremely coarse wool.
SHEEP

the soft, thick hair on a sheep

MATERIAL

A2 thick thread or material that is made from the hair of a sheep:

a wool suit
a ball of wool
→ See also cotton wool

(Definition of “wool” from the Cambridge Learner’s Dictionary © Cambridge University Press)