Derived from Middle Low German slagge, which is in metallurgy the result of schlagen and schlag (Old High German slag, slac (“a hit, strike, blow”)). The Middle Low German slagge was in the 16th century taken into High German Language as Schlacke.
Schlacke f (genitive Schlacke, plural Schlacken)
- slag, dross, scoria
- cinders, clinker
- sediment, dregs, scum
- (physiology) metabolic residue in body tissue or digestive system
- (dialect) rectum
- Schlacke in Duden online