midnight
US /ˈmɪd.naɪt/
UK /ˈmɪd.naɪt/

1.
twelve o'clock at night
:
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The clock struck midnight.
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We stayed up until midnight to watch the fireworks.
1.
of or occurring at midnight
:
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We took a midnight stroll through the city.
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The train departs at the midnight hour.