Posted on 12th November 2020 by melyn Kostrelas is the Cornish word for flaskful Yes, flaskful in Cornish is kostrelas Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window) Related Post navigationPrevious post: Enyshe is the Cornish word for isolateNext post: Gerya is the Cornish word for babble