con·cer·ti·na
noun/ˌkɒnsəˈtiːnə/
/ˌkɑːnsərˈtiːnə/
- a musical instrument like a small accordion that you hold in both hands. You press the ends together and pull them apart to produce sounds.

enlarge image Topics Musicc2六角手风琴 Word Originmid 19th cent.: from concert + -ina.