slub

Từ điển WordNet v3.1 - WordNet Dictionary

noun

soft lump or unevenness in a yarn;
either an imperfection or created by design
• Syn:
knot, burl
• Derivationally related forms:
burl (for: burl)
• Hypernyms:
roughness, raggedness

• Từ đồng nghĩa / Synonyms:
  knot, burl