IPA: /ˈklæk.sən/
KK: /ˈklæk.sən/
A loud warning sound or horn, often used in vehicles or alarms.
The claxon sounded, alerting everyone to evacuate the building.
Claxon is derived from the brand name 'Claxon', which was used for a type of automobile horn invented in the early 20th century. The term has since become a generic term for any loud horn or alarm. The word does not have traditional Latin or Greek roots but originates from a specific product name.
Think of the loud sound of a car horn, which is what a claxon represents. This helps you remember that a claxon is a type of loud horn or alarm.