At a meeting of prominent Zabul women, she casually mentioned that her office needed a higher fence and concertina wire.
There is concertina barbed wire going up on parts of the border between Bangladesh and India.
1835, from concert + fem. ending -ina. Portable musical instrument invented 1829 by Sir Charles Wheatstone. Concertina wire attested by 1917, so called from similarity to the musical instrument.