Probably of foreign origin; the Chiddekel (or Tigris) river
KJV Usage: Hiddekel.
Brown-Driver-Briggs' Hebrew Definitions
Hiddekel = "rapid" 1. one of the rivers of Eden which coursed east toward Assyria; better known as the Tigris (the LXX equivalent)
Origin: probably of foreign origin
Parts of Speech: Proper Name Masculine