noun
a hard, granular mineral substance consisting of corundum mixed with magnetite or hematite, used as an abrasive
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The emery board is used for smoothing and shaping nails.
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I need to grab an emery board to fix this snag on my nail.
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Hey, can you pass me that emery thingy for my nails?
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Her sharp wit was like an emery, polishing away any dullness in the conversation.