Related Clues:

• Conscription org.
• Vent sound
• Viper's sound
• Greeting for the villain
• Snake's warning
• Snaky sound
• 'Greetings' org.
• Flat tire sound
• Radiator sound
• S.D.S. target
• It gave out nos.
• Serpent's sound
• Bad reception?
• Catcall
• Fuse sound