The Collaborative International Dictionary of English v.0.48:

Bheesty \Bhees"ty\, Bheestie \Bhees"tie\, n. [Written also
   bhistee, bhisti, etc.] [Per. bihisht[imac] lit.,
   heavenly.]
   A water carrier, as to a household or a regiment. [India]
   [Webster 1913 Suppl.] Bhistee