Definition of "son"
A male child, a boy or man in relation to his parents; one's male offspring.
A male adopted person in relation to his adoption parents.
A male person who has such a close relationship with an older or otherwise more authoritative person that he can be regarded as a son of the other person.
A male person considered to have been significantly shaped by some external influence.
A male descendant.
A familiar address to a male person from an older or otherwise more authoritative person.
A friendly address to a person of equal authority.