\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.