Caught in a trap (6)
I believe the answer is:
'caught in a trap' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for snared that I've seen before include "Enticed and trapped" , "Trapped by sander" , "Caught in trap as by poacher" , "Entrapped" , "Caught in a trap like rabbit in noose" .)