Broadcast dramedy describing a fantasy (8)
I believe the answer is:
daydream
'fantasy' is the definition.
(I've seen this before)
'broadcast dramedy describing a' is the wordplay.
'broadcast' is an anagram indicator (letters scattered or cast around).
'describing' is an insertion indicator (describe can mean to form the outline of).
'dramedy' with letters rearranged gives 'daydrem'.
'daydrem' going around 'a' is 'DAYDREAM'.
(Other definitions for daydream that I've seen before include "(Indulge in) idle reverie" , "An idle diurnal fantasy" , "Distracting thoughts" , "Diurnal reverie" , "A pleasant diurnal fantasy" .)