key bugle
/ˈkiː ˌbjuːɡl/Music. Now chiefly historical
noun
A bugle fitted with keys to increase the range of sounds it can produce.
- The key bugle was invented by the bandmaster of the Cavan Militia, Joseph Haliday (1772–1827) in 1810..
Origin
Early 19th century; earliest use found in New Times. From key + bugle.