the part of a building or construction entirely above its foundation or basement.

any structure built on something else.

the overlying framework or features of an organization, institution, or system, built or superimposed on a more fundamental base.

Nautical . any construction built above the main deck of a vessel as an upward continuation of the sides. Compare deckhouse .

the part of a bridge that rests on the piers and abutments.

anything based on or rising from some foundation or basis

a complex ideological superstructure based on two hypotheses.