The Meghna River is one of the major rivers in Bangladesh, one of the three that form the Ganges Delta, the largest delta on earth, which fans out to the Bay of Bengal.submission from New Jersey, U.S. says the name Meghna means "Cloudy dreamer". According to a user from Canada, the name Meghna is of Sanskrit origin and means "Girl=queen of clouds, boy=king of clouds". A user from India says the name Meghna is of Hindu origin and means "Beyond the clouds".River (Ganges [Ganga] River) delta, in Bangladesh. The name is properly applied to a channel of the Old Brahmaputra downstream from Bhairab Bazar, after it has received the Surma (Barak) River.