Possibly from Bengali মহাদরিয়া (mohadriẏa), from + মহা (moha, “great”) + Classical Persian دریا (daryā, “sea”). See ᱫᱚᱨᱭᱟ (dôrya).
ᱢᱟᱦᱟᱫᱚᱨᱭᱟ • (mahadôrya)