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1.
1. Any beer. Particularly refers to heavy, full bodied beers, which can be very filling.

2. Guiness, or Irish Breakfast, as it is also called.
1. I don't need lunch; I just had some liquid bread.

2. Guiness is the closest you'll ever get to liquid bread without putting a loaf of Wonderbread into a blender.
by Al February 09, 2004
 
2.
A beer with a high specific gravity at the end of fermentation resulting in a dense beer.
I hate when people correlate dark beer with heaviness, I have had pale colored liquid bread, and dark colored session brews
by bozini rollitini June 11, 2010
 
3.
beer, especially one rich in nutrients from the yeast used to ferment it
The shelves were full of liquid bread but there wasn't a single bottle of hard cider.
by The Return of Light Joker May 04, 2010