Snare's component inverted (4)
I believe the answer is:
trap
'snare's' is the definition.
(synonyms)
'component inverted' is the wordplay.
'component' becomes 'part' (a component is a part of something).
'inverted' shows that the letters should be reversed in order.
'part' written backwards gives 'TRAP'.
(Other definitions for trap that I've seen before include "Means of transport (sometime sprung!)" , "Catch; two-wheeled carriage" , "Deceive" , "Device to catch prey" , "website?" .)