Answer : The name Ma'inul means water flowing on the surface of the earth , clear **** , pure **** , pure **** , evil -eyed , eye-catching , water source , fountain. However, it is better to keep Mu'inul Islam as the name from Ma'inul Islam! Because , Mu'inul Islam means , helper of Islam! (Source: Modern Arabic-Bengali Dictionary - Al-Mu'jamul Wafi , page 96)