Related Clues:

• 'Greetings' org.
• Flat tire sound
• Radiator sound
• S.D.S. target
• It gave out nos.
• Serpent's sound
• Fizzle sound
• Former lottery org.
• Teakettle sound
• Onetime lottery org.
• Stovetop sound
• Lottery letters
• When this sound stops, you'll be left flat
• Serpentine sound
• Sibilant sound