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wool

wool /ˈwʊl/ noun
wool
/ˈwʊl/
noun
Britannica Dictionary definition of WOOL
[noncount]
: the soft, thick hair of sheep and some other animals see also lambswool
: cloth or clothing made of wool
often used before another noun
chiefly British : long, thick thread made of wool and used for knitting

pull the wool over someone's eyes

informal
: to trick or deceive someone : to hide the truth from someone