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出典:Wiktionary
gold-beater's skin
From the use of cow intestines as a separator in the manufacture of gold leaf.
goldbeater's skin (countable かつ uncountable, 複数形 goldbeater's skins)
出典:Wikipedia
出典:『Wikipedia』 (2011/04/30 20:23 UTC 版)
Goldbeater's skin — the outer membrane of calf's intestine — is a parchment traditionally used in the process of making gold leaf by beating, reducing gold into mere 1μm-thick leaves.