Posted on 22nd August 2013 by melyn Tanweyth is the Cornish word for fireworks Yes, fireworks in Cornish is tanweyth Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Glusa is the Cornish word for glueNext post: Omladhans is the Cornish word for suicide