nilgaut (French) comes from Hindi नीलगाय, from Hindi गाय, from Sauraseni Prakrit 𑀕𑀸𑀈, from Sanskrit गावी, from Sanskrit गो, from Proto-Indo-Iranian gāuš, from Proto-Iranian gā́wš, from Proto-Indo-Iranian gā́wš — cattle.
nilgaut (French): nilgai