Etymology tree Proto-Indo-European *peh₂- Proto-Indo-European *péh₂sti Proto-Italic *pāskōr Latin pāscor Proto-Indo-European *-tew-? Proto-Indo-European *-r-eh₂? Latin -tūra Latin pastūra Anglo-Norman pastourbor. Middle English pasture English pasture Inherited from Middle English pasture, borrowed from Anglo-Norman pastour, from Latin pastūra, from pāscor + -tūra.