shalenoun [ U ]
uk/ʃeɪl/us/ʃeɪl/a type of soft, grey rock, usually formed from clay that has become hard, that breaks easily into thin layers
Thesaurus: synonyms and related words
Geology: types of rock
- alabaster
- basalt
- basaltic
- bioclastic
- boulder
- carboniferous
- chalk
- clastic
- conglomerate
- cryolite
- flinty
- gneiss
- gypsum
- haematite
- igneous
- lava
- quartz
- schist
- sedimentary
- slate
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