1) Office or studio 2) Room 3) Room where work is done 4) Where things get done 1) Studio 2) Study 
A service department such as apparel alterations, drapery manufacture, library materials processing.
• (n.) Any room or apartment used especially for labor.
Work'room` noun Any room or apartment used especially for labor. 
[n] - room where work is done
noun room where work is done