A transgendered person who was born female but has transitioned to masculinity through hormones, chest surgery, bottom surgery, and/or simply by identifying as male.
He hesitated to get into bed with the woman; he afraid of her knowing that he was actually a transman.
An FtM who (a)identifies as male, (b)has transitioned far enough so that he appears to be an ordinary (genetic) man, and (c)does not identify as nongendered, mixed gendered, or female.
When I try to describe my transman boyfriend to my family, I usually say that he was born female but now he looks, acts, and smells like any other man. But really, what works best is for them just to meet him.