Settle in Blighty (5)
I believe the answer is:
light
'settle' is the definition.
(I've seen this before)
'in blighty' is the wordplay.
'in' says the answer is hidden in the clue.
'LIGHT' is hidden within 'blighty'.
(Other definitions for light that I've seen before include "Torch" , "Person of authority" , "Source of illumination" , "weighing relatively little" , "Illumination weights little" .)