"Transwoman-solo" is a porn video tag that describes a scene featuring a transgender woman (someone assigned male at birth but identifies and expresses as a woman, who may have undergone hormone replacement therapy, and/or surgery) performing solo activities. In this context, "solo" means the scene does not involve any other participants; it is focused on the transwoman engaging in sexual or sensual acts by herself. These scenes can be arousing for viewers with an interest in transgender women, and they may showcase various aspects of her body or specific activities she's doing to please herself.