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1. |
[adj-no]
▶ important stone in a construction |
2. | A 2011-05-07 06:15:13 Rene Malenfant <...address hidden...> | |
1. | A* 2011-05-07 03:10:21 Scott | |
Refs: | daijr |
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Comments: | I think it's also a specific type of stone. also 親石元素 http://100.yahoo.co.jp/detail/親石元素/ |