spall verb. [spɔ:l] M18.
[Rel. to SPALL noun¹.]
1. verb trans.
a. Mining. Break (ore) into smaller pieces. M18.
b. Dress (stone) roughly. L18.

2. verb trans. & intrans. Break off or off in fragments; splinter, chip. M19.

3. verb trans. Nuclear Physics. Cause spallation of (a nucleus). L20.

■ spaller noun (Mining) a person who or machine which spalls ore M19.

[TahlilGaran] English Dictionary ▲

spall noun¹. [spɔ:l] LME.
[Origin unkn.]
A splinter or chip, esp. of wood, stone, etc.

[TahlilGaran] English Dictionary ▲

spall noun². [spɔ:l] Scot. & poet. rare. L16.
[Italian spalla from medieval & mod. Latin spatula (see SPAULD) or var. of SPAULD.]
The shoulder; the shoulder-bone.

[TahlilGaran] English Dictionary ▲