The story
- Old Norse · derived fromþriðjungr“third part”
- Old English · inherited from*þriðing
- Middle English · inherited fromtrithing
- English todaytrithing
From Middle English trithing, tridinge, from Old English *þriðing, from Old Norse þriðjungr (“third part”).
Words from the same roots
Middle Englishtrithing all →
riding
Old Norseþriðjungr all →
riding
Etymology from Wiktionary, CC BY-SA 4.0.