beep 
(bēp)
(bēp)n.
A sound or signal, as from a horn or an electronic device.
v. beeped, beep·ing, beeps
v.intr.
To make a beep.
v.tr.
1. To cause to make a beep: The drivers stuck in traffic beeped their horns.
2. To activate the beeper of (a person) by telephoning its number.
[Imitative.]