1. clock  noun
    1.  clog masculine noun, 1st declension
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at 4 o'clock(referring to time)
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irish
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it's 3 o'clock by my watch(according to)
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it's 3 o'clock by my watch(according to)
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irish
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at 2 o'clock sharp(precisely)
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at twelve (o'clock)(midday)
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twelve o'clock(midnight)
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