What it means

1. adjective having official authority or sanction
   “official permission”
2. adjective verified officially
   “the election returns are now official”
3. adjective (of a church) given official status as a national or state institution
4. adjective conforming to set usage, procedure, or discipline
   “in prescribed order”
5. adjective of or relating to an office
   “official privileges”
6. noun someone who administers the rules of a game or sport
   “the golfer asked for an official who could give him a ruling”
7. noun a worker who holds or is invested with an office