Related Clues:

• Middle C, e.g.
• Some medical advice
• Doctor's prescription, sometimes
• Sit for a spell
• Take a few minutes
• Take a time-out
• Residuum
• '___ to self . . .'
• Staff member
• Musical silence
• Symbol on a staff
• Jot down
• Whatever's left over
• Musical staff symbol
• State of inactivity