Grassy part of an arable area (3)
I believe the answer is:
lea
'grassy part' is the definition.
The definition and answer can be both locations as well as being singular nouns.
Perhaps there's a link between them I don't understand?
'of an arable area' is the wordplay.
'of' says the answer is hidden in the clue.
'LEA' is hidden in the letters of 'arable area'.
Can you help me to learn more?
(Other definitions for lea that I've seen before include "Field" , "Tract of pastureland" , "Pasture, London river" , "authority for teachers" , "Meadow (poetic)" .)