The story
- Proto-Indo-European*gerh₂-
- Proto-Indo-European*gerg-
- Proto-West Germanic*krakōn
- Old Englishcracian
- Middle Englishcrakken
- Englishcrack
- Proto-Indo-European*kap-?
- Proto-Indo-European*kap-
- Proto-Indo-European*káput
- Proto-Germanic*haubudą
- Old Englishhēafod
- Middle Englishheed
- Englishhead
- English todaycrackhead
From crack + -head. First sense appears c. 1978. Second sense appears c. 1977 in Best Canadian Stories.
Etymology from Wiktionary, CC BY-SA 4.0.