The story
- Proto-Germanic · derived from*þelą
- Old Norse · derived fromþeli“frozen ground”
- Old Swedish · derived from*þiæli
- Swedish · borrowed fromtjäle
- English todaytjaele
Borrowed from Swedish tjäle, which is descended from Old Swedish *þiæli, from Old Norse þeli (“frozen ground”), which is related to þel (“nap on wool; underwool”), and ultimately from Proto-Germanic *þelą.
Etymology from Wiktionary, CC BY-SA 4.0.