Source : Webster's Revised Unabridged Dictionary (1913)

Danaide \Da"na*ide\, n. [From the mythical Danaides, who were
   condemned to fill with water a vessel full of holes.] (Mach.)
   A water wheel having a vertical axis, and an inner and outer
   tapering shell, between which are vanes or floats attached
   usually to both shells, but sometimes only to one.