- "Your latinum is always welcome, but if you want credit you'll have to talk to the owner". - Leeta (DS9: "Doctor Bashir, I Presume")
Credit is the act of lending money to a person until they can pay it back.
After he ran out of money, Kozak wanted to buy more bloodwine with credit, something which Quark was not open to, as his bar was not as profitable as it had been at the time. (DS9: "The House of Quark")