Sound from R2-D2 (4)
I believe the answer is:
beep
(Other definitions for beep that I've seen before include "Toot" , "Sound of a horn" , "Warning signal" , "Alarming noise" , "Electronic warning sound" .)
I believe the answer is:
beep
(Other definitions for beep that I've seen before include "Toot" , "Sound of a horn" , "Warning signal" , "Alarming noise" , "Electronic warning sound" .)