Concertina

[,kɒnsə'tiːnə] or [,kɑnsɚ'tinə]

解释:

(noun.) free-reed instrument played like an accordion by pushing its ends together to force air through the reeds.

(noun.) coiled barbed wire used as an obstacle.

(verb.) collapse like a concertina.

欧文录入--From WordNet

解释:

(n.) A small musical instrument on the principle of the accordion. It is a small elastic box, or bellows, having free reeds on the inside, and keys and handles on the outside of each of the two hexagonal heads.

录入:特德