"evening land", or "western land", an ancient name for Italy
The name of a nymph in Greek mythology, the daughter of Cebren, a river god. Aesacus, son of Priamus and Alexirrhoe, fell in love with her. She fled from him but was bit by a snake and died. Aesacus, grieving, attempted to drown himself but was changed into a bird by Tethys.
... This is why spinning gyro tops will not simply fall over, but start precessing around. (The precessing motion is perpendicular to the torque trying to make the gyro ...