Favourite part of the rope trick (3)
I believe the answer is:
pet
'favourite' is the definition.
(synonyms)
'part of the rope trick' is the wordplay.
'part of' indicates a hidden word.
'PET' can be found hidden inside 'rope trick'.
(Other definitions for pet that I've seen before include "Tamed domestic animal" , "Tamed animal; sulk" , "Favourite, may be teacher's" , "Particular favourite" , "Caress - budgie, perhaps?" .)