TV group (3)
I believe the answer is:
set
I believe this clue is a double definition.
'tv' is the first definition.
(I've seen this in other clues)
'group' is the second definition.
(set is a kind of group)
(Other definitions for set that I've seen before include "Put down tennis games" , "Hard; place" , "Congeal" , "Class" , "Become fixed or solid" .)