0 Classified information is officially stated to be secret: --
1 (of information) officially secret: --
2 classified documents and information are officially kept secret and can only be seen by people who have high authority or special permission: --
3 relating to the small advertisements in newspapers, magazines, or on websites that offer jobs or to sell or buy things: --
The help-wanted classified sections are overflowing with ads for managers.
4 used to describe information that is arranged by type: --