An Etymological Dictionary of the German Language/Kohle

by Friedrich Kluge

Kohle, f., ‘coal, charcoal,’ from the equiv. MidHG. kole, f., mostly kole, kol, m., and kol, n., OHG. cholo, m., chol, n.; comp. AS. col, n., E. coal (E. colemouse, see under Kohlmeise), OIc. kol, n. plur., ‘coals.’ Akin to the derivs, OIc. kylna, f., ‘kiln,’ AS. cylne, E. kiln, as well as Swed. kylla, ‘to heat.’