Related Clues:
- Speed ___
- America's #1 antibacterial soap
- Choo-choo's sound
- Radio feature
- Palindromic horn sound
- Drinking binge
- Part of an old phone
- Train whistle sound
- Bygone telephone device
- Maker of Purex and Armour Hash
- Blow one's own horn?
- Obsolescent phone feature
- Whistle sound
- Obsolescent phone part
- Decoder feature