Congested, choked (7)
I believe the answer is:
clogged
This clue is a double definition.
'congested' is the first definition.
('clog' can be a synonym of 'congest')
'choked' is the second definition.
(I know that choked can be written as clogged)
(Other definitions for clogged that I've seen before include "Some morris dancers are" , "Blocked" , "Congested, choked" .)