Inch of grass with section snipped (4)
I believe the answer is:
edge
'inch' is the definition.
(synonyms)
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for edge that I've seen before include "Rim - move gradually" , "'Border, boundary, rim (4)'" , "The part farthest from the middle" , "Move furtively; intense quality" , "Sharp side of a blade" .)