Related Clues:

• Cop's rounds
• Gentle knock
• ''Pardon me . . .'' gesture
• It's a faucet in the US
• Some dance back at the piano
• Knock lightly
• Tavern spigot
• Finish ahead of the guard walking there
• Keg opener
• Select, informally
• Drummer's responsibility
• Physical 'Psst!'
• See 10
• See 9
• See 7