natural son
Noun
Meaning
A male biological child, whether legitimate or illegitimate, as opposed to one adopted.
They have two children: a natural son and an adopted daughter.
An illegitimate son.
Source: en.wiktionary.orgNoun
A male biological child, whether legitimate or illegitimate, as opposed to one adopted.
They have two children: a natural son and an adopted daughter.
An illegitimate son.
Source: en.wiktionary.org