Locate rotating toys (4)
I believe the answer is:
spot
'locate' is the definition.
(thesaurus)
'rotating toys' is the wordplay.
'rotating' is a reversal indicator.
'toys' becomes 'tops' (top is a kind of toy).
'tops' reversed gives 'SPOT'.
(Other definitions for spot that I've seen before include "point on snooker table" , "Notice; skin blemish" , "See; round mark" , "See - speckle" , "See; pimple" .)