
• (pl. ) of Porta
Found on 
http://thinkexist.com/dictionary/meaning/portae/

gates In a classical Roman encampment there were six gates; the porta praetoria at the front of the camp, the porta decumana at the rear, the two portae principales, one at each end of the via principalis, and the portae quintanae at each end of the via quintana; in many forts some of these gates would be omitted, particulaly the portae quintanae. ...
Found on 
https://www.encyclo.co.uk/local/20768
  No exact match found.