a brass instrument consisting of a long tube whose length can be varied by a U-shaped slide
"The jazz musician pulled out his trombone, sliding the metal tube back and forth to create smooth, mournful notes."
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♭).
"The jazz band's soloist pulled out his gleaming brass instrument with the long sliding tube to play a mournful melody."
To transmit a signal or data back to a central switching point before sending it out to its destination.
"The network engineer reconfigured the router to trombone traffic through the primary hub instead of taking the faster direct path, which temporarily increased latency for all users."