1. (noun) soft lump or unevenness in a yarn; either an imperfection or created by design

• knot
• slub

1. (noun) the wood cut from a tree burl or outgrowth; often used decoratively in veneer

• wood

2. (noun) a large rounded outgrowth on the trunk or branch of a tree

• enation
• plant process

3. (noun) soft lump or unevenness in a yarn; either an imperfection or created by design

• raggedness
• roughness

4. (verb) remove the burls from cloth

• remove
• take
• take away
• withdraw

1. (verb) remove the burls from cloth

• knot
• slub