pickproof
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pickproof — adjective Date: 1933 designed to prevent picking < a pickproof lock > … New Collegiate Dictionary
pickproof — /pik proohf /, adj. (of a lock) designed so that it cannot be picked. [1930 35; PICK1 + PROOF] * * * … Universalium
pickproof — adjective Resistant to being picked … Wiktionary
pick|proof — «PIHK PROOF», adjective. very hard or impossible to break open: »This lock is practically pickproof … Useful english dictionary
