sand·blast 
(săndblăst′)
(săndblăst′)n.
1.
a. A blast of air or steam carrying sand at high velocity to etch glass or to clean stone or metal surfaces.
b. A machine used to apply such a blast.
2. A strong wind carrying sand along.
tr.v. sand·blast·ed, sand·blast·ing, sand·blasts
To apply a sandblast to (a building, for example).
sandblast′er n.