Definition - What does Bio-Boy mean?
A bio-boy is a non-trans male, or a person who is naturally born male, and who identifies psychologically and socially as male.
Kinkly explains Bio-Boy
In the trans community, some disagree with this term because it implies that trans men do not have a biological basis for identifying as male. In addition, biology is actually much more complicated than simply male and female, leaving many people who identify as male outside of the definition.