Fireplace in entertaining legend (5)
I believe the answer is:
ingle
'fireplace' is the definition.
(I've seen this in another clue)
'in entertaining legend' is the wordplay.
'in' indicates the answer is hidden within the clue.
'INGLE' is hidden within 'entertaining legend'.
(Other definitions for ingle that I've seen before include "A fireside nook - get leg in" , "Fireplace in a room" , "Fireplace for Nigel" , "Sort of nook" , "Type of fireplace" .)