Clear field? (3)
I believe the answer is:
lea
'field?' is the definition.
(lea can mean a meadow or field of grass)
'clear' is the wordplay.
'LEA' is hidden within the letters.
However, I'm not sure how this is indicated.
Can you help me to learn more?
(Other definitions for lea that I've seen before include "Pasture, London river" , "authority for teachers" , "Open grassy land; river" , "Grazing land" , "Poetically, a piece of meadow or pasture" .)