on the hour

idiom
Updated on: 15 Nov 2017

Definition of on the hour

: at the beginning of the next hour
  • The next train will leave on the hour.

Word by Word Definitions

hour play
  1. : a time or office for daily liturgical devotion

  2. : the 24th part of a day : 60 minutes

  3. : the time of day reckoned in two 12-hour periods


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