TROMBONE

a large brass-wind instrument with a flared bell at one end of a long tube bent parallel to itself twice and having either a section that slides in or out (slide trombone) or valves (valve trombone). —EM-9A Approved Film Glossary

a large brass wind instrument with a flared bell at one end of a long tube bent parallel to itself twice and having either a section that slides in or out (slide trombone) or valves (valve trombone). A trombone?a large brass-wind instrument with a flared bell at one end of a long tube bent parallel to itself twice and having either a section that slides in or out (slide trombone) or valves (valve trombone).