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holeproof

[hohl-proof]
adjective
  1. (of fabric or an article of clothing) designed or made so as to prevent holes.
  2. constructed so as to prevent evasion or subterfuge: a holeproof document.
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Origin of holeproof

First recorded in 1910–15; hole + -proof
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018