Definitions of compact:

• noun:   a small cosmetics case with a mirror; to be carried in a woman's purse
• noun:   a small and economical car
• noun:   a signed written agreement between two or more parties (nations) to perform some action
• verb:   have the property of being packable or compactable or of compacting easily

  Example: "This powder compacts easily"

• verb:   make more compact by or as if by pressing
• verb:   squeeze or press together
• verb:   compress into a wad
• adjective:   closely and firmly united or packed together

  Example: "Compact soil"

• adjective:   closely crowded together

  Example: "A compact shopping center"

• adjective:   heavy and compact in form or stature

  Example: "A wrestler of compact build"

• adjective:   briefly giving the gist of something

  Example: "A compact style is brief and pithy"