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cotton wool - Wiktionary, the free dictionary

From Wiktionary, the free dictionary

cotton wool (usually uncountable, plural cotton wools)

  1. (US) Raw fibers of cotton before being processed.
    Hypernym: wool
    Coordinate term: wool
  2. (UK) Soft, absorbent cotton for medical or cosmetic use, protective padding, etc.
    Hypernym: wool
    Coordinate term: cotton swab

raw fibers of cotton

absorbent cotton