[ ˌkɒnsə'ti:nə ]
■ noun
1》 a small musical instrument played by stretching and squeezing a central bellows between the hands to blow air over reeds, each note being sounded by a button.
2》 [as modifier ] opening or closing in multiple folds.
■ verb ( ~s , ~ing , ~ed or ~'d ) extend or compress in folds like those of a ~.