Noun
quoniam (plural quoniams)
(slang, obsolete) A kind of drinking-cup.
However, it does seem clear that his first notable work, Summa Quoniam Homines, was completed somewhere between 1155 and 1165, with the most conclusive date being 1160, and was probably developed through his lectures at the school in Paris. Source: Internet
Pope John XXII reissued this collection in the bull Quoniam nulla, 25 October 1317. Source: Internet