down‧time /ˈdaʊntaɪm/ noun [uncountable]

1. the time when a computer is not working

2. (also down time) informal a period of time when you have finished what you were doing, and you can relax or do something that you had not originally planned to do:
Often, during semesters, you have down time when you can do some exercise.
—downtime adjective:
downtime activities for teachers

[TahlilGaran] Dictionary of Contemporary English ▲