Name of a lifestyle shared by many people. The word BDSM is a combination of 3 acronyms, BD for Bondage Discipline, DS for Domination and Submission and SM for Sado Masochistic. Considered either like a grave deviance or a and healthy sexual game/orientation by the medical institutions, people who share this lifestyle believe in having a relationship where one of the people by mutually agreed upon conscent is in a position of power/domination (DS) often by using means of bondage discipline (BD) and Sado masochistic (SM) over the other person in this relationship. This relationship could be for a brief moment (a play) or for a longer period of time (permanent relationship).
To know more about BDSM, we have an article at: What Is BDSM?
Type of play which uses restraints which could include handcuffs, ropes, shackles etc. Considered a fetish.
The bondage can be done on the whole body or part of it (wrist, ankle, breast....)
The bondage can be light (wrist attached together with a silk scarf), or it could be heavier (chain, padlock, tight roping)