the limit; boundary; markerDepending on context, la borne can refer to a physical boundary marker, a limit, or a terminal/kiosk. In expressions such as dépasser les bornes, its plural form means “to go too far” or “to cross the line.”
FR: La borne de vitesse est fixée à 50 kilomètres à l’heure.
EN: The speed limit is set at 50 kilometers per hour.