Tangle up (in a net) (6)
I believe the answer is:
enmesh
'tangle up in a net' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for enmesh that I've seen before include "To ensnare" , "Men she changed to entangle" , "Make tangled as if in a net" , "Entangle as in net" , "Catch in net" .)