The story
- Late Latin · derived frompastōria
- Old French · derived frompasturon
- Middle English · inherited frompastron
- English todaypastern
From Middle English pastron, pastroun, pasturne, from Old French pasturon, diminutive of pasture (“shackle for a horse in pasture”), alteration of Late Latin pastōria after the suffix -ure.
Etymology from Wiktionary, CC BY-SA 4.0.