Definitions of architecture:

• noun:   the profession of designing buildings and environments with consideration for their esthetic effect
• noun:   an architectural product or work
• noun:   the discipline dealing with the principles of design and construction and ornamentation of fine buildings

  Example: "Architecture and eloquence are mixed arts whose end is sometimes beauty and sometimes use"

• noun:   (computer science) the structure and organization of a computer's hardware or system software

  Example: "The architecture of a computer's system software"