A photographer working in his darkroom.
darkroom definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a room from which all actinic rays are excluded, so that photographs can be developed in it
darkroom definition by American Heritage Dictionary
A room in which photographic materials are processed, either in complete darkness or with a safelight.