The Collaborative International Dictionary of English v.0.48:

Architecture \Ar"chi*tec`ture\ (?; 135), n. [L. architectura,
   fr. architectus: cf. F. architecture. See Architect.]
   1. The art or science of building; especially, the art of
      building houses, churches, bridges, and other structures,
      for the purposes of civil life; -- often called civil
      architecture.
      [1913 Webster]

            Many other architectures besides Gothic. --Ruskin.
      [1913 Webster]

   3. Construction, in a more general sense; frame or structure;
      workmanship.
      [1913 Webster]

            The architecture of grasses, plants, and trees.
                                                  --Tyndall.
      [1913 Webster]

            The formation of the first earth being a piece of
            divine architecture.                  --Burnet.
      [1913 Webster]

   Military architecture, the art of fortifications.

   Naval architecture, the art of building ships.
      [1913 Webster]