আশ্বিন (Bengali) comes from Sanskrit आश्विन, from Sanskrit अश्विन्, from Sanskrit अश्व, from Proto-Indo-Aryan Háśwas, from Proto-Indo-Iranian Háćwas, from Proto-Indo-European h₁éḱwos, from Proto-Indo-European h₁oh₁ḱu- — swift.
আশ্বিন (Bengali): Ashwin