/ Dictionary / Index T top-secret: Meaning and Definition of Find definitions for: top-se•cret Pronunciation: (top'sē'krit), [key] — adj. bearing the classification top-secret, the highest level of classified information. limited to persons authorized to use anything so classified. Cf. classification (def. 5). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: top-secret (Thesaurus) topsail schooner top sergeant Related Content Daily Word Quiz: philtrum Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language