Idle at home, one taking in ITV broadcast (8)
I believe the answer is:
inactive
'idle' is the definition.
('inactive' can be similar in meaning to 'idle')
'home one taking in itv broadcast' is the wordplay.
'home' becomes 'in' ('he's home' can mean 'he's in').
'one' becomes 'ace' ('ace' can be a synonym of 'one'**).
'taking in' is an insertion indicator.
'broadcast' is an anagram indicator.
'itv' anagrammed gives 'tiv'.
'ace' going around 'tiv' is 'active'.
'in'+'active'='INACTIVE'
'at' is the link.
(Other definitions for inactive that I've seen before include "Quiescent" , "Idle, showing no movement" , "Passive, doing nothing" , "Immobile, not working" , "sluggish" .)