Tragon, which overeats. There is no doubt that it was formed with swallow (from the verb swallow) aldaba ( "metal piece that hangs on the doors as a caller") ; where there is no agreement is to explain the origin. Of all the versions I am left with "eating up to the door", or a tighter one that associates with the aldabas held on its hinge by lion heads or indefinite beings, hanging from their jaws as if they were "chewing with angurria even the callers". I don't mention the swallow, whoovers and other giant swallows because they seem to be consequence rather than origin, as well as several literary characters.
