mains

from The Collaborative International Dictionary of English v.0.48
mains \mains\ (m[=a]nz), n. [Scot. See {Manse}.]
   The farm attached to a mansion house; a manse. [Scot. or
   Brit. dial.]
   [1913 Webster]
    
from The Collaborative International Dictionary of English v.0.48
mains \mains\ (m[=a]nz), n. (Electricity)
   The source of electrical power in a building; the wiring
   system of a building.
   [PJC]
    

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