Country boy ensnares maiden finally (4)
I believe the answer is:
land
'country' is the definition.
(I've seen this before)
'boy ensnares maiden finally' is the wordplay.
'boy' becomes 'lad' (lad is a kind of boy**).
'ensnares' means one lot of letters goes inside another.
'finally' says to take the final letters.
The last letter of 'maiden' is 'n'.
'lad' enclosing 'n' is 'LAND'.
(Other definitions for land that I've seen before include "Part of Germany" , "part of surface" , "Ground; country" , "Acquire" , "Capture" .)