Dust"er (?), n.
1.
One who, or that which, dusts; a utensil that frees from dust
. Specifically: (a) Paper Making
A revolving wire-cloth cylinder which removes the dust from rags, etc.
(b) Milling
A blowing machine for separating the flour from the bran.
2.
A light over-garment, worn in traveling to protect the clothing from dust.
[U.S.]
© Webster 1913.