Model of a scene I love in play (7)
I believe the answer is:
diorama
'model of a scene' is the definition.
(I've seen this before)
'i love in play' is the wordplay.
'love' becomes 'o' (love means zero in tennis).
'in' is an insertion indicator.
'play' becomes 'drama' (synonyms).
'i'+'o'='io'
'io' placed into 'drama' is 'DIORAMA'.
(Other definitions for diorama that I've seen before include "Model showing a scene" , "Miniature scene with figures" , "museum feature" , "Model representing a scene with three-dimensional figures" , "Exhibition" .)