|
Definition of Copperfasten
1. Verb. (transitive historical) To protect the timbers [of a ship] with plates of copper secured with copper nails or bolts. ¹
2. Verb. '''1796''', ''The Hull Advertiser,'' 9th July 1796:“[ Copper-bottomed]”, ''[ The Phrase Finder],'' [ Gary Martin] ¹
3. Verb. (transitive figuratively British Irish) To reinforce, strengthen; to make permanent, embed. ¹
¹ Source: wiktionary.com