debit

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun An item of debt as recorded in an account.
• noun The left-hand side of an account or accounting ledger where bookkeeping entries are made.
• noun An entry of a sum in the left-hand side of an account.
• noun The sum of such entries.
• transitive verb To enter (a sum) on the left-hand side of an account or accounting ledger.
• transitive verb To charge with a debit.

from The Century Dictionary.

• noun That which is entered in an account as a debt; a recorded item of debt: as, the debits exceed the credits.
• noun That part of another's account in which one enters any article of goods furnished or money paid to or on account of that other: as, place that to my debit.
• To charge with as a debt: as, to debit a purchaser the amount of goods sold.
• To enter on the debtor side of a book: as, to debit the sum or amount of goods sold.

from the GNU version of the Collaborative International Dictionary of English.

• noun A debt; an entry on the debtor (Dr.) side of an account; -- mostly used adjectively.
• transitive verb To charge with debt; -- the opposite of, and correlative to, credit.
• transitive verb (Bookkeeping) To enter on the debtor (Dr.) side of an account.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun In bookkeeping, an entry in the left hand column of an account to record a debt.
• noun A sum of money taken out of an account.
• verb To make an entry on the debit side of an account.
• verb To remove a sum of money from an account as a payment.
• adjective of or relating to process of taking money from an account

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun an accounting entry acknowledging sums that are owing
• verb enter as debit