- concertina - coiled barbed wire used as an obstacle
--1 is a kind of barbed wire
- concertina - free-reed instrument played like an accordion by pushing its ends together to force air through the reeds
--2 is a kind of free-reed instrument
Derived form: verb concertina1 - concertina - free-reed instrument played like an accordion by pushing its ends together to force air through the reeds
- concertina - collapse like a concertina
--1 is one way to collapse
Sample sentence:Derived form: noun concertina2
Something ----s