1. oíche  feminine noun, 4th declension
    1.  evening(after dark)noun
    2.  nightnoun
    3.  night-timenoun
  2. oíche  adjective
    1.  nightlyadjective
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by night(with time : not later than)
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good night!(on going to bed)
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good night!(on going to bed)
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he'll never live it down(exist, last)
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twelve o'clock(midnight)
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it would have been midnight(conjecture)