half-hour - definition and synonyms

noun 

Your browser doesn’t support HTML5 audio

singularhalf-hour
pluralhalf-hours
  1. 1

    half-hour

    or

    half an hour

    [countable] [usually singular] a period of 30 minutes

    I’ll call you back within the next half-hour.

    The job should take about a half-hour.

  2. 2
    [singular] the time that is 30 minutes after the start of an hour

    The buses leave on the half-hour.