Brooklyn cagers (4)
I believe the answer is:
nets
'brooklyn cagers' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nets that I've seen before include "Brings home" , "bags" , "'Traps for 29 dn, say (4)'" , "Practice pitches (cricket)" , "Lacy curtains" .)