pumice stonenoun [ C ]
uk/ˈpʌm.ɪs ˌstəʊn//ˈpʌm.ɪs ˌstoʊn/a piece of pumice used for rubbing things to make them smooth:
You can use a pumice stone in the bath to remove dry skin from your feet.
Thesaurus: synonyms and related words
Geology: types of rock
- basalt
- basaltic
- bedrock
- bioclastic
- boulder
- carboniferous
- chalk
- clastic
- conglomerate
- cryolite
- flinty
- gneiss
- gypsum
- haematite
- lava
- lodestone
- quartz
- schist
- sedimentary
- slate
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Making things more or less smooth or straight