Smart crop (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
trim
I believe this clue is a double definition.
'smart' is the first definition.
(synonyms)
'crop' is the second definition.
(synonyms)
(Other definitions for trim that I've seen before include "Neat - prune" , "Cut, prune; decorate" , "Pare; an ornament" , "Fit - pare" , "To change views expediently" .)