"device that emits beeps," 1946, agent noun from beep (v.).
Entries linking to beeper
beep interj.
1927, imitative of automobile horns (originally of the sound of a certain type of automobile horn, one among several in the years after the klaxon horn was brought into use c. 1910). Used as a noun and verb by 1929. Related: Beeped; beeping.