a short high sound such as that made by a car horn or by electronic equipment (汽车喇叭或电子设备发出的)嘟嘟声,哔哔声 The taxi gave a beep as it drew up to the house. 出租车开到家门口时发出嘟嘟声。 Please leave your message after the beep and we’ll call you back. 请在哔声后留言,我们会给你回电话。
Word Origin1920s: imitative.