(2 syl.). The east wind. So called, says Buttmann, from eös, the east. Probably it is eos cru'o, drawn from the east. Ovid confirms this etymology: “Vires capit Eurus ab ortu. ” Breman says it is a corruption of eoros.
While southern gales or western oceans roll, And Eurus steals his ice-winds from the pole.
Darwin: Economy of Vegetation, canto vi.
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894
More on Eurus from Fact Monster: