Definition of pumice noun from the Oxford Advanced Learner's Dictionary

 

pumice

 noun
noun
BrE BrE//ˈpʌmɪs//
 
; NAmE NAmE//ˈpʌmɪs//
 
(also pumice stone)[uncountable] Beauty products
 
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a type of grey stone that comes from volcanoes and is very light in weight. It is used in powder form for cleaning and polishing, and in pieces for rubbing on the skin to make it softer. See related entries: Beauty products Word Origin late Middle English: from Old French pomis, from a Latin dialect variant of pumex, pumic-.
See the Oxford Advanced American Dictionary entry: pumice