fleece
US /fliːs/
UK /fliːs/

1.
the woolly covering of a sheep or goat
:
•
The shepherd sheared the sheep's fleece.
•
This coat is made from soft lamb's fleece.
2.
a soft warm fabric with a texture similar to sheep's wool, used for lining clothes and making outdoor garments
:
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He wore a warm fleece jacket.
•
The blanket was made of soft fleece.