quarter-hour

quar·ter-hour also quar·ter hour (kwôrtr-our)

n.

1. Fifteen minutes.

2. The point on a clock's face marking either 15 minutes after or 15 minutes before an hour.

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quarter-hour

Noun

1. a period of 15 minutes

2. either of the points of time 15 minutes before or after the hour

Thesaurus

Noun

1.

quarter-hour - a quarter of an hour                 15 minutes time unit, unit of time - a unit for measuring time periods 60 minutes, hour, hr - a period of time equal to 1/24th of a day; "the job will take more than an hour"