Noun
A kind of beer. Same as Quass.
Source: Webster's dictionaryIn that text is a passage about Louis the Pious that says annona militaris quas vulgo foderum vocant, which can be translated as "Louis forbade that military provender (which they popularly call "fodder") be furnished. Source: Internet
Pope John XXII 's 1317 edict, Spondent quas non exhibent forbade the false promises of transmutation made by pseudo-alchemists. Source: Internet