The story
- Proto-Celtic · derived from*ɸare-kʷenno-“extremity, end”
- Old Irish · borrowed fromairchinnech
- English todayerenagh
Borrowed from Old Irish airchinnech, from Proto-Celtic *ɸare-kʷenno- (“extremity, end”); see *kʷennom (“head”).
Etymology from Wiktionary, CC BY-SA 4.0.