1.nounIn bookkeeping, an entry in the left hand column of an account.
"A cash sale is recorded as debit on the cash account and as credit on the sales account."
2.nounA sum of money taken out of a bank account. Thus called, because in bank's bookkeeping a cash withdrawal diminishes the amount of money held on the account, i.e. bank's debt to the customer.
3.verbTo make an entry on the debit side of an account.
4.verbTo record a receivable in the bookkeeping.
"We shall debit the amount of your purchase to your account."