Why turkey has the same name as Turkey
brass musical instrument of cylindrical bore, used by guards of mail coaches in the 18th and early 19th centuries. At the end of the 18th century, post horns were crescent-shaped, coiled, or straight. The notes they sounded were at most six (harmonics 2 to 7). The post horn gave rise to the cornet in the 19th century, when valves were applied to it.