The term of art is "bent", strange though it may sound.

"Puerta en codo" means the same as "en recodo" or "en quiebro", which we've had before:
http://www.proz.com/kudoz/spanish_to_english/architecture/58...

They all mean an entrance or gateway that you had to approach from the side, making a 90º turn, so attackers couldn't use battering rams. It's a feature of Islamic castle-building adopted in the Christian West.
https://en.wikipedia.org/wiki/Bent_entrance

Here are a couple more references from academic works on the subject to add to those I cited in my answer to the previous question:

"This system was replaced in the thirteenth century by a bent entrance, set in the north side of an elongated tower"
The Medieval City Under Siege, ed. Ivy A. Corfis & Michael Wolfe, 91
https://books.google.es/books?id=OJIFpd09vCgC&pg=PA91&lpg=PA...

"and further sophistication of the bent gateway"
Peter Fraser Purton, A History of the Early Medieval Siege, C. 450-1220, 245
https://books.google.es/books?id=_vSjtwGLBiAC&pg=PA245&lpg=P...

"The reason for concentricity was of course military, but it was also religious, because the inner court, entered through a bent gateway"
Jonathan Riley-Smith, The Knights Hospitaller in the Levant, C.1070-1309, 112
https://books.google.es/books?id=8wNY3gLWMqoC&pg=PA112&lpg=P...