Call and sink into chair maybe after six (5)
I believe the answer is:
visit
'call' is the definition.
('visit' can be a synonym of 'call')
'sink into chair maybe after six' is the wordplay.
'sink into chair maybe' becomes 'sit'.
'after' means one lot of letters go next to another.
'six' becomes 'vi' (roman numeral).
'sit' after 'vi' is 'VISIT'.
'and' acts as a link.
(Other definitions for visit that I've seen before include "Look up" , "Pay social call" , "Come to see" , "See; temporary stay" , "Call upon" .)