- jamproof
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/jam"proohf'/, adj.built so as to prevent jamming: a jamproof copying machine.[JAM1 + -PROOF]
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Universalium. 2010.
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Universalium. 2010.
jamproof — /jam proohf /, adj. built so as to prevent jamming: a jamproof copying machine. [JAM1 + PROOF] … Useful english dictionary