In the main, it's edgy (3)
I believe the answer is:
hem
'in the main it's edgy' is the definition.
I can't judge whether this definition defines the answer.
'in the main it's edgy' is the wordplay.
'in' indicates the answer is hidden within the clue.
'HEM' is hidden within 'the main edgy'.
Can you help me to learn more?
(Other definitions for hem that I've seen before include "Double-backed edge" , "Bottom of a garment" , "try to attract attention" , "Part of skirt" , "Express hesitation" .)