What is…
Geder

Hebrew: גֶּדֶר —transliteration: Geder —meaning: a walled place (Geder means wall)

Meaning:

This is the name of a city in ancient Canaan.

And these are the kings of the country which Joshua and the children of Israel smote on this side Jordan on the west, from Baalgad in the valley of Lebanon even unto the mount Halak, that goeth up to Seir; which Joshua gave unto the tribes of Israel for a possession according to their divisions; In the mountains, and in the valleys, and in the plains, and in the springs, and in the wilderness, and in the south country; the Hittites, the Amorites, and the Canaanites, the Perizzites, the Hivites, and the Jebusites: The king of Jericho, one; the king of Ai, which is beside Bethel, one;

…The king of Debir, one;
the king of Geder, one; … Joshua 12:7-13 KJV excerpt

This is perhaps the same place as Gederah or Gedor (Joshua 15:58).

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