shale
Shale (noun) means a soft, fine-grained sedimentary rock that splits easily into thin layers. Example: “The cliff face was made of crumbling grey shale.”
How to use shale
Learner’s notesIn plain EnglishA layered rock that splits easily, or, in energy terms, the industry built around extracting oil and gas from it.
Word forms
- Plural
- shales
- Third person singular
- shales
- Past tense
- shaled
Fill the gap
Can you complete this real example?
The cliff face was made of crumbling grey _____.
Etymology
From Old English scealu ("shell, husk"), related to "shell" and a doublet of "scale".