天火字典

英日字典：ｲｩﾄ･､

ｲｩﾄ･､

､ｦ､ｰ､､､ｹ､ﾐ､鷯

(n) nightingale (flooring)
method of laying floors to deliberately make a noise (like a nightingale's call) when walked across (security feature)

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