Related Clues:

• Warning from a driver
• Whistle-blowing outcome?
• Old-timey horn sound
• Do it on a flute
• Sound of a horn
• Either way to get one on the blower
• What would you do with a horn up and down?
• 'As well to get a little tea, by the sound of it (4)'
• Blow this either way from 26 down
• Use a vuvuzela
• "Beep!" on the river
• Make steam whistle noises
• __ one's own horn
• "Beep!" on the ocean
• Horn honk