হিন্দুস্তান (Middle Bengali) comes from Persian هندوستان, from Persian ـستان, from Middle Persian -stʾn', from Proto-Indo-Iranian stáHnam, from Proto-Indo-European stéh₂-no-m, from Proto-Indo-European steh₂- — to stand.
হিন্দুস্তান (Middle Bengali): Hindustan northern region of India