The term 'Taxi Feature' is composed of two crossword solutions, HORN (4 letters) and METER (5 letters). HORN is a device used to make a loud sound, usually as a warning or signal. It is commonly found in cars, including taxis, and is used to alert other drivers or pedestrians. METER is a device used to measure and record the amount of money owed for a service, such as a taxi ride. It is typically found in the front of the taxi and records the distance traveled and the fare due. Together, these two features are essential components of a taxi.