Verb
- Present participle of copperfasten.
copperfastening
English Wiktionary. Available under CC-BY-SA license.
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"copperfastening." YourDictionary, n.d. Web. 14 January 2019. <https://www.yourdictionary.com/copperfastening>.
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copperfastening. (n.d.). Retrieved January 14th, 2019, from https://www.yourdictionary.com/copperfastening
