A room in which is kept a reserved stock of materials or goods ready for use or sale.(noun)
A room, usually in a hotel, where travelers for business-houses show their samples and take orders.(noun)
The Century Dictionary (Public Domain)
Use "stock-room" in a sentence
"In a dream he stepped from the elevator into the stock-room, and walking to an unused aisle, sat down on a box, covering his face with his hands."
"Airline reservation clerks, stock-room personnel, machine operators, and repairmen may be able to function quite adequately on the job by listening rather than reading, as a voice from the machine tells them, step by step, what to do next or how to replace a broken part."
"He went through to the stock-room behind, pressed a button, and an elevator door opened in a rather surprising manner."