Posted on 1st November 201721st May 2017 by melyn Tonnas is the Cornish word for ton Yes, ton in Cornish is tonnas Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Anvlasus is the Cornish word for tastelessNext post: ‘Stinky person!’ in Cornish is ‘Flerys!’