Meshes (4)
I believe the answer is:
nets
'meshes' is the definition.
('net' can be a synonym of 'mesh')
This is the entire clue.
(Other definitions for nets that I've seen before include "Captures" , "Meshes to catch fish, say" , "'Traps for 29 dn, say (4)'" , "Traps, to catch fish say" , "puts ball into goal" .)