Englishfor English speakers
brush
Noun
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A brush is a tool with many thin pieces of plastic to smooth hair and wool.
brush
Verb
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If you brush something, you clean it with a brush.
I forgot to brush my teeth before going to bed.
proof
Noun
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Proof is evidence which shows something is correct.
He has proof that he was not at the crime scene. A witness says that they were somewhere else.
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A proof can show how a theorem is correct.