Related Clues:

• Does a garçon's job
• Stands in line
• Hangs on
• Stays put
• Does restaurant work
• Lingers
• Carol singers
• Serves, with "on"
• Web user's woes
• Stands by - carollers
• Is on hold, say
• Itinerant carol-singers
• Street performers at Christmas
• Night-time Yuletide singers
• Practices patience