A bank is a financial institution which deals with deposits and advances and other related services. It receives money from those who want to save in the form of deposits and it lends money to those who need it. It deals with deposits and advances and other related services like lending money to grow the economy.
Banks act as bridge between the people who save and people who want to borrow i.e., It receives money from those people who want to save as deposits and it lends money to those who want to borrow it. The money you deposited in bank will not be idle. It will grow by means of interest to your bank account they will earn interest in return for lending out the same money to borrowers. This would ensure smooth money flow to develop our economy.
An institution for the keeping, lending and exchanging etc. of money
Banking means the accepting for the purpose of lending or investment of deposits of money from the public, repayable on demand or otherwise and withdrawable by cheque, draft, and an order or otherwise
An establishment for custody of money, which it pays out on customer's order.