Related Clues:

• Hangs on a line?
• Twiddles one's thumbs, say
• President's withholding the last of human remains
• Works in a cafe, maybe
• Works at a restaurant ... or what many diners experience at popular restaurants
• Serves, with 'on'
• Delays works inside cafe?
• Counts down the minutes, maybe
• Queues up
• Stays on hold