Domination is when a person shows power over another, taking control of them and ordering them to do whatever they please. A dominant person might be referred to as a dominatrix or mistress (female), or a master (male). Those willing to give themselves over completely to a dom might be called a sub (submissive) or a slave. The life of slavitude is not for everyone, but if this is something you are interested in, finding the right partner is essential.
