Barred enclosure (4)
I believe the answer is:
cage
'barred enclosure' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for cage that I've seen before include "American composer with centenary this year" , "One famous for creating silence" , "Barred accommodation for animal" , "Enclosure of wire or metal bars" , "Enclosure made from metal bars" .)