Gathering (8)
'gathering' is the definition.
(I know that assembly is a type of gathering)
This is the entire clue.
(Other definitions for assembly that I've seen before include "Meeting place" , "Legislative gathering" , "Gathering of people or fitting of parts together" , "Flock" , "Body of people that meets" .)
'gathering' is the definition.
('tuck' can be a synonym of 'gather')
This is the entire clue.