Gardeners working outside with verdant area (10)
I believe the answer is:
greensward
'verdant area' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.
'gardeners working outside with' is the wordplay.
'working' is an anagram indicator.
'outside' indicates putting letters inside.
'with' becomes 'w' (short for with).
'gardeners' anagrammed gives 'greensard'.
'greensard' going around 'w' is 'GREENSWARD'.
Can you help me to learn more?
(Other definitions for greensward that I've seen before include "mostly turf" , "Grass covered ground" , "Lawn" .)