*Human body (5)
'human body' is the definition.
(synonyms)
This is all the clue.
(Other definitions for anatomy that I've seen before include "mummy?" , "Study of the structure of animals" , "Science of bodily structure" , "(Science of) physical structure of animals or plants" , "The scientific study of bodily structures" .)
(Other definitions for navel that I've seen before include "Central point" , "Variety of orange" , "for contemplation" , "Belly button" , "Part of body; sort of orange" .)