Learn how to say Cotton Wool correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word cotton wool:
Also called: purified cotton (mainly British) bleached and sterilized cotton from which the gross impurities, such as the seeds and waxy matter, have been removed: used for surgical dressings, tampons, etc Usual US term: absorbent cotton
cotton in the natural state
a state of pampered comfort and protection
(as modifier) ⇒ a cotton-wool existence