Televises bits of rock by pair of players (7)
I believe the answer is:
screens
'televises' is the definition.
(puts on the tv screen)
'bits of rock by pair of players' is the wordplay.
I cannot really see how this works, but
'bits' could be 'scree' (I have seen 'bits of rock' mean 'scree' so perhaps 'bits' could also mean 'scree') and 'scree' is found within the answer.
'players' could be 'ns' (bridge players: north and south) and 'ns' is found within the answer.
This accounts for all the letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for screens that I've seen before include "Checks" , "Shows on the telly" , "for security guards" , "Covers to conceal" , "vets" .)