- The slide: This is the main part of the trombone and it is what makes it unique. The slide is a long, cylindrical tube that can be moved in and out to change the length of the instrument, and thus change the pitch of the sound produced.
- The bell: This is the part of the instrument that projects the sound. It is usually made of brass or another metal and is shaped like a flared cone.
- The mouthpiece: This is the part of the instrument that the player blows into. It is usually made of metal, such as brass or silver, and it has a cup-shaped design.
- The leadpipe: This is the part of the instrument that connects the mouthpiece to the slide. It is usually made of brass and has a cylindrical shape.
- The tuning slide: This is the part of the instrument that is used to adjust the tuning of the instrument. It is usually made of brass or another metal and it is located near the bell of the instrument.
- The spit valve: This is a small valve that is used to drain water from the instrument. It is usually located on the slide.