Definitions of structure:

• noun:   a thing constructed; a complex construction or entity

  Example: "The structure consisted of a series of arches"

• noun:   the manner of construction of something and the arrangement of its parts

  Example: "Artists must study the structure of the human body"

• noun:   a particular complex anatomical structure

  Example: "He has good bone structure"

• noun:   the complex composition of knowledge as elements and their combinations

  Example: "His lectures have no structure"

• noun:   the people in a society considered as a system organized by a characteristic pattern of relationships

  Example: "Sociologists have studied the changing structure of the family"

• verb:   give a structure to

  Example: "I need to structure my days"