WordWeb Online

1. A piece of cloth used for dusting
   - dustcloth, dustrag
    
2. [US] A windstorm that lifts up clouds of dust or sand
   "it was the kind of duster not experienced in years";
   - dust storm, sandstorm, sirocco, scirocco
    
3. A loose coverall (coat or frock) reaching down to the ankles
   - gaberdine, gabardine, smock, dust coat
    
4. A pitch thrown deliberately close to the batter

Derived forms: dusters

Type of: coverall [N. Amer], delivery, piece of cloth, piece of material, pitch, windstorm [N. Amer]

Encyclopedia: Duster, Texas