bombinator

noun2

1. •
   (literary) A person who speaks or makes noise to no effect, as a flattering toady or empty orator.

   • Therefore our apology to such bombinators, radicals, Utopians and Schoengeisten who might read this work expecting intellectual mayhem. — 1941
2. •
   Ellipsis of bombinator toad.

   • Schiff adduces experiments on bombinators and toads[.] — 1898