Definitions for darkroomˈdɑrkˌrum, -ˌrʊm
Random House Webster's College Dictionary
a room in which film, photographic paper, etc., is made, handled, or developed and from which the actinic rays of light are excluded.
Origin of darkroom:
a room in which photographs are developed
A dark room, where photographs are developed.
A darkened room where sexual activity can take place, especially one in a gay club.