o'clock

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adverb o'·clock \ə-ˈkläk, ō-\

Definition of o'clock

  1. 1 :  according to the clock <the time is three o'clock>

  2. 2 —used for indicating position or direction as if on a clock dial that is oriented vertically or horizontally <an airplane approaching at six o'clock>

Origin and Etymology of o'clock

contraction of of the clock


First Known Use: 1535


O'CLOCK Defined for English Language Learners

o'clock

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adverb o'·clock \ə-ˈkläk, ō-\

Definition of o'clock for English Language Learners

  • : according to the clock


O'CLOCK Defined for Kids

o'clock

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adverb o'·clock \ə-ˈkläk\

Definition of o'clock for Students

  1. :  according to the clock <The time is one o'clock.>


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to decrease in size, extent, or degree

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