Shakers founder (3)
I believe the answer is:
lee
'shakers founder' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for lee that I've seen before include "Sheltered from the wind in Cork, perhaps" , "Protection" , "Sheltered accommodation" , "Revolutionary general" , "The side that's sheltered from the wind" .)