The term 'HORN SOUNDS' can be broken down into three crossword solutions: TOOTS (5 letters), BEEPS (5 letters), and HONKS (5 letters). All three of these words refer to sounds that are made by horns, such as those found on cars, boats, and other vehicles. TOOTS is a short, sharp sound, usually made with a car horn. BEEPS is a higher-pitched sound, often used to indicate a warning or alert. HONKS is a longer, lower-sounding noise, typically used to signal a greeting or to get someone's attention.