1. A fragment broken off from the edge or face of stone or ore and having at least one thin edge
   "a truck bearing a mound of blue spalls";
   - spawl

1. (of stone, concrete, or similar material) to break or split off in fragments, typically due to weathering or pressure
   "The old brick wall was spalling due to years of freeze-thaw cycles"

Derived forms: spalled, spalls, spalling

Type of: fragment

Encyclopedia: Spall, Robert