Mesh; trap (3)
I believe the answer is:
net
I believe this is a double definition.
'mesh' is the first definition.
(I know that mesh can be written as net)
'trap' is the second definition.
(net is a type of trap)
(Other definitions for net that I've seen before include "Cricket practice area" , "Lattice" , "Tennis equipment" , "Mesh; profit" , "After taxes" .)