Source : Webster's Revised Unabridged Dictionary (1913)

Builder \Build"er\, n.
   One who builds; one whose occupation is to build, as a
   carpenter, a shipwright, or a mason.

         In the practice of civil architecture, the builder
         comes between the architect who designs the work and
         the artisans who execute it.             --Eng. Cyc.

Source : WordNet®

builder
     n 1: a substance added to soaps or detergents to increase their
          cleansing action [syn: {detergent builder}]
     2: someone who contracts for and supervises construction (as of
        a building) [syn: {constructor}]