plural of hi-top

Third-person singular simple present indicative form of top oneself

plural of service top

plural of spin-top

plural of stove-top

plural of halter-top

Third-person singular simple present indicative form of top one's boom

Third-person singular simple present indicative form of top from the bottom

(military, government) Information classified at one of the highest levels of sensitivity by a government, based on an assessment that it would cause exceptionally grave damage to national security if disclosed.

A secret that is classed as "top secret"; a top-secret secret; top-secret information. / Used other than figuratively or idiomatically: see top, secret.