The story
- Proto-Indo-European*slak-der.?
- Proto-Germanic*slahanądeverb.
- Proto-Germanic*slagiz
- Proto-West Germanic*slagi
- Old High Germanslag
- Middle High Germanslac
- GermanSchlag
- English todaySchlag
Borrowed from German Schlag.
Etymology from Wiktionary, CC BY-SA 4.0.