The story
- Old English · inherited frompundfald“pinfold”
- Middle English · inherited frompundfold
- Middle English · inherited frompinfold
- English todaypinfold
From Middle English pinfold, punfold, punfald, variants of Middle English pundfold, pundfald, from Old English pundfald (“pinfold”), equivalent to pound (“pen, enclosure”) + fold.
Etymology from Wiktionary, CC BY-SA 4.0.