1. A crumbling and drying of timber, bulbs, potatoes or fruit caused by a fungus
   "The old wooden beams in the house were weakened by dry rot"
    
2. A fungus causing dry rot
   "Dry rot weakened the wooden beams of the old house"

1. Affect or be affected with dry rot
   "The old wooden beams had begun to dry-rot"

Derived forms: dry-rots, dry-rotted, dry-rotting

Type of: fungus, mildew, mold [N. Amer], mould [Brit, Cdn], plant disease

Encyclopedia: Dry rot