The slate

n.

Heard in Waterford

Credit to be paid later.

In use

How did you get the drink, I thought you had no money? I put it on the slate." "I have a slate down in my local, so I can drink during the week and pay for it at the weekend.

Posh English

How did you manage to acquire the beverage when I thought you were entirely penniless? I simply charged it to my tab. I maintain an account at my local establishment, so I may imbibe during the week and settle the debt at the weekend.