(role-playing games) Initialism of Advanced Dungeons & Dragons.

Initialism of accidental death and dismemberment.

Initialism of application development and delivery.

(euphemistic, chiefly US And UK) The word damn. / (euphemistic) The word dick or dickhead. / (euphemistic) The word douche or douchebag. / (euphemistic) The word dyke.

(biochemistry) Any of a number of fat-soluble vitamins, required for normal bone development and that prevents rickets; can be manufactured in the skin on exposure to sunlight.

(pharmacology) Alternative spelling of dextroamphetamine

(euphemistic) An instance of the word "damn" or "damnation", regarded as profane.

(informal) The city of Dallas, Texas, USA.

Abbreviation of three-dimensional.

(informal, chiefly US) A headwaiter.