Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A chamber, with a roof covered by a deep pile of gravel, within which nuclear warheads may be maintained; in the event of a (non-nuclear) explosion, the roof is weakened and the gravel falls and prevents the escape of nuclear material

Etymologies

From a character in the Dick Tracy comic strip (Wiktionary)

Examples

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