o'clock Hear it!

o'clock definition

o'clock (ə kläk′, ō-)

adverb

  1. of or according to the clock nine o'clock at night
  2. as if on a clock dial, with the number 12 straight ahead or directly overhead: used to indicate direction, esp. of an approaching aircraft

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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