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]

WordNet (r) 3.0 (2006):

architecture
    n 1: an architectural product or work
    2: the discipline dealing with the principles of design and
       construction and ornamentation of fine buildings;
       "architecture and eloquence are mixed arts whose end is
       sometimes beauty and sometimes use"
    3: the profession of designing buildings and environments with
       consideration for their esthetic effect
    4: (computer science) the structure and organization of a
       computer's hardware or system software; "the architecture of
       a computer's system software" [syn: computer architecture,
       architecture]

Moby Thesaurus II by Grady Ward, 1.0:

155 Moby Thesaurus words for "architecture":
   Bauhaus, Byzantine, Egyptian, English, French, German, Gothic,
   Greco-Roman, Greek, Greek Revival, Italian, Persian, Renaissance,
   Roman, Romanesque, Spanish, academic, action, anagnorisis, anatomy,
   angle, architectonics, argument, arrangement, assembly, atmosphere,
   background, baroque, build, building, casting, catastrophe,
   characterization, civil architecture, color, complication,
   composition, conformation, constitution, construct, construction,
   continuity, contrivance, conversion, crafting, craftsmanship,
   creation, cultivation, denouement, design, development, device,
   devising, early renaissance, edifice, elaboration, episode,
   erection, establishment, extraction, fable, fabric, fabrication,
   falling action, fashion, fashioning, forging, form, format,
   formation, forming, formulation, frame, framing, frozen music,
   functionalism, getup, gimmick, growing, handicraft, handiwork,
   harvesting, house, incident, international, landscape architecture,
   landscape gardening, line, local color, machining, make, makeup,
   making, manufacture, manufacturing, medieval, milling, mining,
   modern, mold, molding, mood, motif, movement, mythos,
   organic structure, organism, organization, packaged house, pattern,
   patterning, peripeteia, physique, pile, plan, plot, prefab,
   prefabrication, preparation, processing, producing, production,
   pyramid, raising, recognition, refining, rising action, scheme,
   secondary plot, setup, shape, shaping, skyscraper, slant, smelting,
   story, structure, structuring, subject, subplot, superstructure,
   switch, tectonics, texture, thematic development, theme, tissue,
   tone, topic, tower, twist, warp and woof, weave, web,
   workmanship



The Free On-line Dictionary of Computing (30 December 2018):

architecture

    Design, the way components fit together.  The
   term is used particularly of processors, both individual and
   in general.  "The ARM has a really clean architecture".  It
   may also be used of any complex system, e.g. "software
   architecture", "network architecture".

   (1995-05-02)