emery rock
- noun
- /ˈɛməri rɑk/
- Specialized
:
piedra de esmeril
- She used an emery rock to sharpen her tools.
Examples
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The old workshop still used emery rock grindstones to sharpen its tools.
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He replaced the worn wheel with a new emery rock disc on the grinding machine.
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Manufacturers prefer emery rock because it is durable and cost-effective for abrasive applications.
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The emery rock was perfect for polishing metal.
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He replaced the worn wheel with a new emery rock disc on the grinding machine.
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Manufacturers prefer emery rock because it is durable and cost-effective for abrasive applications.
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The old workshop still used emery rock grindstones to sharpen its tools.
Synonyms
A hard block used to sharpen or polish metal and jewelry
How Abrasive
Surface Forms
Morphology
The meaning is directly compositional: an 'emery rock' is simply a rock/material composed of emery used for grinding, which follows the transparent noun+noun compound pattern. A B1 learner who knows 'emery' (an abrasive mineral) and 'rock' (a piece of mineral material) can readily infer this use and purpose without prior exposure.
Etymology
Emery rock comes from old toolmakers who took the hard material emery, ground it into dust and mixed it with a kind of glue to make a solid rock for rubbing and sharpening. That's why emery rock today means a shaped, very hard tool used for 'sharpening' and 'smoothing'.