Definitions of dummy:

• noun:   a figure representing the human form
• noun:   a person who does not talk
• noun:   a cartridge containing an explosive charge but no bullet
• noun:   an ignorant or foolish person
• verb:   make a dummy of

  Example: "Dummy up the books that are to be published"

• adjective:   having the appearance of being real but lacking capacity to function

  Example: "A dummy corporation"