WordWeb Online

1. A furlike coating of matter as on the tongue
    
2. Strip used to give a level surface for attaching wallboard
   - furring strip

1. [Brit] Become covered or clogged with a deposit (e.g. limescale in a hard water area)
   "the boiler has become furred up"; "Facts about smoking and furred-up arteries";
   - fur up [Brit]
    
2. Cover or trim with fur

Derived forms: furrings

Type of: strip, symptom

Encyclopedia: Furring