Related Clues:

• Sound a warning as temperature's excessively raised
• Make a noise on the way — and on the way back
• Buzzer with quiet warning sound
• Horn's sound (T, not H)
• Palindromic honk
• Voicemail signal
• Horn sound, in a children's book
• Use horn, going up and down
• Excessively tense, sound horn
• Blow in either direction
• Books going one way and another - blast!
• Sound horn up and down
• It's a driver's warning, anyway
• Sound one's horn
• Blow overtime!