Building Trades.
1. Also, drywall .
a. an interior wall or partition finished in a dry material, usually in the form of prefabricated sheets or panels nailed to studs, as distinguished from one that is plastered.
b. a material, as wallboard or plasterboard, used for such a wall.
2. a masonry or stone wall laid up without mortar.
[ 1770-80, for earlier sense ]