英语词汇quoin的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

词汇	quoin
词根词缀	Online Etymology Dictionary quoin n. 1530s, "a cornerstone," variant spelling of coin, n.; in early use also in other senses of that word, including "a wedge."
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