Related Clues:

• It causes lights to go out
• For water and lights out, by the sound of it
• They may be turned on for lights out in the US
• At the end of the day they get turned on for the American serviceman
• They sound as if they get the lights knocked out in the USA
• Water did be spitting from them up the last thing at night
• Turn them off and turn the lights off in the US army
• Turn them on for knocks for the blows at last
• They were spitting up the water in them
• Uses a foot to keep time
• Base lullaby
• Base notes
• Tune for lights out
• Selects, so to speak
• Evensong?