BDSM BDSM bondage and discipline A set of various sadomasochistic behaviors or activities involving a restrained partner or partners who is disciplined, either verbally, physically, or psychologically by another partner or partners. B & D B & D (sexual behavior) B and D B&D B-&-D B/d BD b & d b and d b/d bd bondage & discipline bondage discipline The Complete Dictionary of Sexology BDSM And Kink Terminology: A To Z Global Encyclopedia of Lesbian, Gay, Bisexual, Transgender, and Queer (LGBTQ) History