B.
- Bigender - A person whose sense of personal identity encompasses two genders.
- Binder - A garment used mainly by trans-masculine people to compress their breasts to give the appearance of having a flat chest.
- Boy Mode - Appearing to the world as a boy or man, regardless of true gender.
- Breast Forms - Artificial breasts, maily used by trans-feminine people, to give the appearance of having breasts.