Posted on 24th April 2012 by melyn Trihornek is the Cornish word for triangular Yes, triangular in Cornish is trihornek Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Skolvaw is the Cornish word for schoolboyNext post: Sempelhe is the Cornish word for simplify