Definition of "knock"
noun:
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An abrupt rapping sound, as from an impact of a hard object against wood.
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An impact.
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Criticism.
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A batsman's innings.
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Preignition, a type of abnormal combustion occurring in spark ignition engines caused by self-ignition or the characteristic knocking sound associated with it.
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verb:
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To rap one's knuckles against something, especially wood.
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To bump or impact.
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To denigrate, undervalue.
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To pass, kick a ball towards another player.
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