a period of 15 minutes any of the points on the face of a timepiece that mark 15 minutes before or after the hour, and sometimes 30 minutes after
WordReference Random House Unabridged Dictionary of American English © 2025
quar•ter-hour
(kwôr′tər ouər′, -ou′ər),USA pronunciation n.
- Timea period of 15 minutes.
- Timea point 15 minutes after or before the hour.
- 1880–85
Collins Concise English Dictionary © HarperCollins Publishers::
'quarter-hour' also found in these entries (note: many are not synonyms or translations):