Sound of a car horn (4)
I believe the answer is:
beep
(Other definitions for beep that I've seen before include "Warning signal" , "Sound of a horn" , "Sound of pager" , "Short high-pitched sound from an electronic device" , "Toot" .)
I believe the answer is:
beep
(Other definitions for beep that I've seen before include "Warning signal" , "Sound of a horn" , "Sound of pager" , "Short high-pitched sound from an electronic device" , "Toot" .)