Boy with a broken nose, almost (3)
I believe the answer is:
son
'boy' is the definition.
(synonyms)
'broken nose almost' is the wordplay.
'broken' indicates anagramming the letters.
'almost' means to remove the last letter (most of the word but not all of it).
'nose' with its last letter removed is 'nos'.
'nos' anagrammed gives 'SON'.
'with a' acts as a link.
(Other definitions for son that I've seen before include "Express paper" , "Human offspring" , "Young boy" , "Heir" , "A relative" .)