Bondage falls under the BDSM umbrella which stands for ‘bondage and discipline, dominance and submission, sadism and masochism’ and is used to describe a whole range of sexual role play scenarios within bondage world.
Bondage is the act of trying or restraining a consensual sexual partner. Bondage consists generally (but not limited to) of tying up, teasing and in some form retraining a sexual partner.