pneumatique means the pneumatic postal system in Paris (abolished 1984), or a letter sent by this system. Lexicurio rates it Sui generis — a strength score of 88 out of 100.
pneumatique is pronounced /njuːmaˈtiːk/.
Etymology
From French pneumatique.
noun
- The pneumatic postal system in Paris (abolished 1984), or a letter sent by this system.“Then, full of imaginative and slightly sentimental resolution, he went out and posted the pneumatique.”