The Collaborative International Dictionary of English v.0.48:

Feng-shui \F[^e]ng"-shu`i\, n. [Chin. feng wind + shiu water.]
   A system of spirit influences for good and evil believed by
   the Chinese to attend the natural features of landscape;
   also, a kind of geomancy dealing with these influences, used
   in determining sites for graves, houses, etc.
   [Webster 1913 Suppl.]