Dark Room	:=	A dungeon room which is intentionally quite dark. Can mostly be found in the gay leather scene
Dental Dam	:=	A latex barrier used for cunnilingus or anilingus to prevent disease transmission. Some sort of "condom", which is spread over the vagina / the anus for safe stimulation of those parts.
Discipline	:=	Codeword for spanking, whipping etc.
Dildo play, Dildo Training	:=	A dildo is inserted into the rectum. There are various sizes, from finger size to enormous. Used for sexual stimulation and/or humiliation.
Dominance, Dominance & Submission, D/s, D&s	:=	The consensual empowerment of one partner by the other for erotic enhancement. Dominance and submission are the psychological and emotional underpinnings of SM. (see also Power Exchange)
Dom, Domme	:=	A dominant male or female person - the person in charge/control (also Top)
Dominatrix	:=	The Latin feminine of the term 'dominator'. A Dominatrix is a professional Domme. A person who offers her SM / D/s services to customers who are able and willing to pay for it.
Dungeon	:=	Room or location designed for SM play