Sound alert? (4)
I believe the answer is:
beep
(Other definitions for beep that I've seen before include "Electronic warning sound" , "Alarming noise" , "High-pitched noise" , "Electronic noise" , "Sound of a horn" .)
I believe the answer is:
beep
(Other definitions for beep that I've seen before include "Electronic warning sound" , "Alarming noise" , "High-pitched noise" , "Electronic noise" , "Sound of a horn" .)