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English definition of “pumice (stone)”

pumice (stone)

noun [C or U] uk   /ˈpʌm.ɪsˌstəʊn/ us    /-ˌstoʊn/
a type of grey, light stone that is used in pieces or as a powder for rubbing things to make them smooth: Pumice is produced in volcanic eruptions. You can use a pumice stone in the bath to remove dry skin from your feet.
(Definition of pumice (stone) from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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