Related Clues:
- Mil. draft org
- Radiator's sound
- The man's second to blow off steam, perhaps
- Conscription org
- Warning from the critters that appear to be slithering through the grid?
- See 1
- S-s-snake's s-s-sound?
- Sound of serpent
- Make snake-like noise
- (Make noise to) express disapproval
- Sound of snake
- What letting off steam might result in
- Leaky radiator's sound
- Hardly a sign of support
- Puff adder's warning