HONK' The term HORN HONK is composed of two words, the first being 'HORN' and the second being 'HONK'. The word 'HORN' is a noun that refers to a device that produces a loud sound when air is blown into it. It is often used as a warning signal or to call attention. The word 'HONK' is a verb that means to make a loud sound with a HORN. It is commonly used to express annoyance or impatience. Together, the two words form the phrase 'HORN HONK', which is used to describe the sound made by a car HORN.