Old English spor

← Proto-Germanic *spurą (inherited)

← Old High German spor (cognate)

← Old Norse spor (cognate)

← Old Dutch spor (cognate)

← Old Frisian *spor (cognate)

← Old Saxon spor (cognate)

→ English pore (cognate)

→ Old English swæþ (link)

→ Middle English spore (inherited)