E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Eretrian.
The Eretrian bull. Menedemos of Eretria, in Euba; a Greet philosopher of the fourth century B.C. and founder of the Eretrian school which was a branch of the Socratie. He was called a bull from the bull-like gravity of his face.