Suspect seen smuggling monkey bodies (8)
I believe the answer is:
entities
'bodies' is the definition.
(an entity is a thing or body)
'suspect seen smuggling monkey' is the wordplay.
'suspect' indicates an anagram (a suspicious or unusual spelling).
'smuggling' indicates putting letters inside (I've seen this in other clues).
'monkey' becomes 'titi' (titi is a kind of monkey).
'seen' is an anagram of 'enes'.
'enes' going around 'titi' is 'ENTITIES'.
(Other definitions for entities that I've seen before include "Things with seperate existence, objects" , "They exist as separate things" , "Things that have a separate existence" , "Things that have physical existence" , "Beings" .)