| 
 | 
Definition of Sheet rock
1. Noun. Pre-hardened plaster of Paris (gypsum) sold in large panels and used as a wall surface in building construction. ¹
¹ Source: wiktionary.com
| 
 | 
1. Noun. Pre-hardened plaster of Paris (gypsum) sold in large panels and used as a wall surface in building construction. ¹
¹ Source: wiktionary.com