noggin

Here Nat Adams, the burly bar-keeper, dispensed bad whisky at the rate of two shillings a noggin, or a guinea a bottle…

I don’t know whether any of you, gentlemen, ever partook of a real, substantial, hospitable Scotch breakfast, and then went to a slight lunch of a bushel of oysters, a dozen or so of bottled ale, and a noggin or two of whisky to close up with.

Or maybe he bumped his noggin when he fell down—after he got clipped on the legs.