Wordnet 3.0
NOUN (1)
1. 
 rules in Chinese philosophy that govern spatial arrangement and orientation in relation to patterns of yin and yang and the flow of energy (qi); 
 the favorable or unfavorable effects are taken into consideration in designing and siting buildings and graves and furniture; 
WordNet (r) 3.0 (2006):
feng shui
    n 1: rules in Chinese philosophy that govern spatial arrangement
         and orientation in relation to patterns of yin and yang and
         the flow of energy (qi); the favorable or unfavorable
         effects are taken into consideration in designing and
         siting buildings and graves and furniture