Search Result for "top-secret": 
Wordnet 3.0

ADJECTIVE (1)

1. the highest official level of classification of documents;


The Collaborative International Dictionary of English v.0.48:

classified \classified\ adj. 1. arranged into classes or categories; as, unclassified. Syn: categorized. [WordNet 1.5 +PJC] 2. assigned to a class of documents withheld from general circulation; -- of information or documents. Opposite of unclassified. Note: [Narrower terms: eyes-only; confidential; restricted; secret; sensitive; top-secret] [WordNet 1.5]
WordNet (r) 3.0 (2006):

top-secret adj 1: the highest official level of classification of documents