noun. A building material comprising a sheet of gypsum sandwiched between two pieces of heavy paper, used mainly for interior walls and ceilings; drywall

verb. To install and finish sheetrock.

"The what-you-might-call sheetrock is something like the tent fabrics you use on Mars, only it hardens."

cement board  gypsum plaster  lath  plaster  wonderboard  

drywall  gyprock  gypsum board  plasterboard  wallboard  

sheetrocks