cotton wool ball

noun

Definition of cotton wool ball

British
: a small ball of cotton that can be used for a variety of purposes (such as removing makeup or cleaning a wound) and that is usually used once and then thrown away : cotton ball

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“Cotton wool ball.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cotton%20wool%20ball. Accessed 20 Sep. 2020.

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