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coign    
n. 突出之角,隅,隅石

突出之角,隅,隅石

coign
n 1: expandable metal or wooden wedge used by printers to lock
up a form within a chase [synonym: {quoin}, {coign}, {coigne}]
2: the keystone of an arch [synonym: {quoin}, {coign}, {coigne}]


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