Barn-raising sect (5)
I believe the answer is:
amish
'barn-raising sect' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for amish that I've seen before include "Member of a sect" , "Relating to a strict American sect" , "those eshewing modern technology" , "American follower of the Mennonite religion" , "One 24 [IN-SECT]" .)