contrabassoon
/ˌkɑntrəbəˈsuːn/
noun
- A large woodwind instrument that plays an octave lower than a regular bassoon, producing very deep notes.
- The contrabassoon added a rumbling depth to the symphony's finale.
- Learning to play the contrabassoon requires strong breath control.
- The orchestra's contrabassoonist carefully assembled the long instrument before rehearsal.