Call and meet about fellow prisoner (8)
I believe the answer is:
cellmate
'fellow prisoner' is the definition.
(I've seen this before)
'call and meet about' is the wordplay.
'and' means one lot of letters go next to another.
'about' indicates an anagram.
'call' put after 'meet' is 'meetcall'.
'meetcall' anagrammed gives 'CELLMATE'.
(Other definitions for cellmate that I've seen before include "Accommodation-sharer in incarceration" , "Fellow prisoner" .)