What does ledger balance amount mean in my ATM account?

ledger balance is how much money you have in total or in total before a pending balance goes through. meaning if you have 200 dollars and you spend 40 and it still says ledger = 200 then your pending 40 dollars spent hasn't gone through yet so you may have 160 available to take out and a ledger of 200 meaning there only giving you access to the difference of the ledger and the pending