Remember to get together again (9)
I believe the answer is:
recollect
I believe this is a double definition.
'remember' is the first definition.
('recollect' can be a synonym of 'remember')
'get together again' is the second definition.
('collect' can be a synonym for 'get together' so perhaps 'recollect' is OK for 'get together again')
'to' acts as a link.
(Other definitions for recollect that I've seen before include "Remember" , "Look back on" , "Flock together again" , "Reminisce" , "in Scotland, mind" .)