Definitions of official:

• noun:   someone who administers the rules of a game or sport

  Example: "The golfer asked for an official who could give him a ruling"

• noun:   a worker who holds or is invested with an office
• adjective:   having official authority or sanction

  Example: "Official permission"

• adjective:   verified officially

  Example: "The election returns are now official"

• adjective:   (of a church) given official status as a national or state institution
• adjective:   conforming to set usage, procedure, or discipline
• adjective:   of or relating to an office

  Example: "Official privileges"