stomachful

Enough to fill one's stomach.

Now, the stomach, to digest it well, will contain but about ten quarts, and when the animal eats one-third of his daily ration of seven pounds in one and one-half hours, he has swallowed at least two stomachsful of hay and saliva, one of these having passed to the intestine.

Narrow and steadfast they were, and with stomachsful of conscience;[…]

As much as one can stomach.

sullen; obstinate; perverse