From Longman Dictionary of Contemporary Englishdisturbed sleepdisturbed sleepsleep that is interrupted → disturbed
Examples from the Corpus
disturbed sleep• Sarah experiences more or less constant pain from a back problem, indigestion, and disturbed sleep.• This may be associated with disturbed sleep and irritability and so the scratching may not be noticed.• Conversely, disturbed sleep patterns can cause periods to become irregular or stop altogether. 