Source: The Collaborative International Dictionary of English v.0.48
Bouillon \Bou`illon"\, n. [F., fr. bouillir to boil.]
1. A nutritious liquid food made by boiling beef, or other
meat, in water; a clear soup or broth.
[1913 Webster]
2. (Far.) An excrescence on a horse's frush or frog.
[1913 Webster]