- A small, hand-held musical instrument that produces sound by forcing air through one or more sets of reeds when the bellows are worked.
- Something folded in a zigzag or accordion-like manner, such as a concertina book.
- A metal structure used to seal the space around a telescopic joint between two parts of an aircraft.
- A type of pleated fabric.
Examples:
- He played a lively tune on his concertina, filling the room with music.
- The concertina book was easy to carry around, making it perfect for reading on the go.
- The concertina seal prevented air from leaking out of the aircraft's cabin.
- The concertina fabric added a touch of elegance to the dress.