Definition of "concertina" [con•cer•ti•na]

• A small hexagonal accordion with bellows and with buttons for keys. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "I'd like to see these communists tarred, feathered, roped in concertina, and dunped just south of the US international border."
• "The sight of this, Alda declared, made her ill; though the little boy was as docile as he was helpless; but it was quite true that to nerves and ears not inured from the first, Theodore's humming and his concertina were a trial from their perpetuity."
• "The concertina, which is somewhat like an accordion but smaller and with buttons but no keys, has a well-deserved reputation for being hard to learn."