Eyecupful

In eye troubles, however, the California Fluid Extract of Eucalyptus works miracles and should be used as a frequent eyewash, two drops of the fluid to an eyecupful of warm water.

Source: wiktionary

Do you think anybody with an eyecupful of brains would stay here if he could get away?

Source: wiktionary

Cleanse the eyes with clear water in an eyecup; or use a boric acid solution, or a few grains of salt added to the eyecupful of cold water.

Source: wiktionary

I had just finished the first appetizing eyecupful of wine when my waitress took the stopper out of the decanter and, with the prettiest gesture imaginable, asked me if I would have some more.

Source: wiktionary