Stonework produced by secret society? (7)
I believe the answer is:
masonry
This clue is a double definition.
'stonework' is the first definition.
(I've seen this before)
'secret society?' is the second definition.
(I know that Masonry is a type of secret society)
'produced by' acts as a link.
(Other definitions for masonry that I've seen before include "Skill in construction" , "Building work in stone" , "Stonework" , "brickwork" .)