1. an enthusiastic speech or emotion outpouring.
2. a liquid outpouring.

… Esperanto attracted leftists and freethinkers of various stripes—Goebbels called it “a language of Jews and communists,” not entirely inaccurately—and the majority of those people, like Zamenhof, conceived of the language as an ethical program. But many others were interested in it primarily as a linguistic novelty. French intellectuals, in particular, were put off by Zamenhof’s brotherhood-of-man effusions, as became clear at the first international congress, in 1905, which was held in Boulogne-sur-Mer.

From the post: The dream of Esperanto bringing about world peace
Source: A language to unite humankind (newyorker.com)