Source : Webster's Revised Unabridged Dictionary (1913)

Superstruct \Su`per*struct"\, v. t. [L. superstructus, p. p. of
   superstruere to build upon; super over + struere to build.
   See {Super-}, and {Structure}.]
   To build over or upon another structure; to erect upon a
   foundation.

         This is the only proper basis on which to superstruct
         first innocency and then virtue.         --Dr. H. More.