holeproof

[hohl-proof]

adjective

(of fabric or an article of clothing) designed or made so as to prevent holes.
constructed so as to prevent evasion or subterfuge: a holeproof document.

Origin of holeproof

First recorded in 1910–15; hole + -proof
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019