1(Of a person) able to be contacted in order to provide a professional service if necessary, but not formally on duty: your local GP may be on call round the clock
More example sentences
- There is an emergency ski patrol service on call 24 hours a day.
- If a physical exam is to be done the physician on call will be contacted.
- Top marks also to all who remained on duty, or on call, over the festive period.
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