n. (Greek mythology) The seven daughters of Atlas and half-sisters of the Pleiades; they nurtured the infant Dionysus and Zeus placed them among the stars as a reward. [ WordNet 1.5 ]

{ } n. pl. [ L. Hyades, Gr. &unr_;. ] (Astron.) A cluster of five stars in the face of the constellation Taurus, supposed by the ancients to indicate the coming of rainy weather when they rose with the sun. [ 1913 Webster ]

Thro' scudding drifts the rainy Hyades
Vext the dim sea. Tennyson. [ 1913 Webster ]