Bole

A Concise Dictionary of Middle English from A.D. 1150 to 1580 · 1889 · p. 5
sb. a kind of clay, C3. Comb. : bole armoniak , Armenian clay, C3, NED (s.v. ammoniac ).—Lat. bolus ; Gr. βῶλος , clod.
Readham'da tam maddeyi gor →