A Cashback Bonus is a reward offered to casino players in Bangladesh or elsewhere that can be exchanged for real money. It is essentially a way of getting a portion of your casino losses refunded, to give you a period of relief from losses and streaks that may be frustrating at times.
You can think of a Cashback Bonus as a way for casinos to win your loyalty, by offering you a chance to play without taking too much risk. Many casinos nowadays offer cashback bonuses on special types of gambling after making a deposit, or after earning a certain amount of points through wagering.