E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Eurus (2 syl.).
The east wind. So called, says Buttmann, from eös, the east. Probably it is eos eruo, drawn from the east. Ovid confirms this etymology: Vires capit Eurus ab ortu. Breman says it is a corruption of εo.