Another minor nitpick (though not so minor if you’re following a recipe):
pint-sized, adj. (and n.) In 1900, pint-sized was used literally to mean holding sixteen ounces.
Or in Rightpondia, of course, twenty ounces .
And the fluid ounces are different sizes, too …
So, the OED just goes with “an eighth of a gallon” with a nice excursis regarding the history of the various capacities of a pint. They also draw a distinction by noting “more fully imperial pint” and “more fully US pint.”