When you use your debit card to get cash you have:

You would Ask for cash back

When you use your debit card to get cash you have, this is usually known as withdrawing a certain amount of money from your bank account. Let it be a checking account, or even a savings account. It usually depends.

This means that you are taking a sum of money from your original account balance. If that is what you are asking, and referring to: it's to withdraw.