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.