trombone

باللغة العربية: مُتَرَدِّدَة، تْرُومْبُون

1. A musical instrument in the brass family, having a cylindrical bore, and usually a sliding tube (but sometimes piston valves, and rarely both). Most often refers to the tenor trombone, which is the most common type of trombone and has a fundamental tone of B♭ˌ (contra B♭). · Jim plays the trombone very well.· This trombone is very expensive.
2. The common European bittern.
3. A kind of extendable support for attaching lighting elements to a set.

الجمع trombones