1. An apartment appropriated for dressing the person.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• dressingroom,
• sressing room,
• xressing room,
• cressing room,
• fressing room,
• rressing room,
• eressing room,
• deessing room,
• ddessing room,
• dfessing room,
• dtessing room,
• d5essing room,
• d4essing room,
• drwssing room,
• drsssing room,
• drdssing room,
• drrssing room,
• dr4ssing room,
• dr3ssing room,
• dreasing room

The adjective form of the word "dressing room" is "dressing-room".

The plural of the "dressing room" can be the "dressing rooms".

The singular of the "dressing room" can be the "dressing room".