The story
- Proto-Indo-European*dwóh₁
- Proto-Indo-European*dwinos
- Proto-Germanic*twinaz
- Proto-Germanic*twinilingaz
- Old High German*twiniling
- Old High Germanzwiniling
- Middle High Germanzwillinc
- GermanZwilling
- English todayZwilling
Borrowed from German Zwilling.
Etymology from Wiktionary, CC BY-SA 4.0.