Male child or youth (3)
I believe the answer is:
boy
This clue is a double definition.
'male child' is the first definition.
(synonyms)
'youth' is the second definition.
(male youth)
(Other definitions for boy that I've seen before include "Young man" , "SECOND HALF OF 14" , "Youthful male" , "Son" , "Young male" .)