An ancient wind instrument, originally made from animal horn, metal, or wood. In the Medieval and Renaissance eras, the horn was used to signal in battles and in hunts. The horn gradually evolved through a series of transformations: the horn for hunting became spiraled so its length would not interfere with its mobility, this natural horn became more refined and found its way into the early Classical orchestra as a character instrument, implying military or hunting scenes. Eventually crooks, and then valves were invented for the horn, enabling it to be fully chromatic. In America, it is often referred to as the French horn.Spanish term for the horn.Also [Eng.] horn; [Fr.] cor; [Ger.] Horn; [Ger.] Ventilhorn; [It.] corno; [Sp.] trompa..A slang term referring to any wind instrument.Horna brass wind instrument, through which sound is produced by the vibrations of the player's lips on the funnel-shaped mouthpiece. In the mid 19th-century, the range of the coiled horn was extended, mainly in France, with crooks and valves, hence the name French horn<br><br>In broad classification of lip-vibrated aerophones into horns and trumpets, the term `horn' is preferred for instruments made from animal horn or tusk, or with a shape derived from these but in other materials, and thus of predominantly conical bore profile such as the bugle. The term is often used without qualification for the french horn<br><br>A speaker or speaker enclosure where sound waves are put into a narrow opening by a speaker cone or driver and the narrow opening flairs out to a larger opening.