Boyd’s Bible Dictionary:
(bridle). An Assyrian city built by Asher or Nimrod (Gen. 10:12).
Concise Bible Dictionary:
The great city “between Nineveh and Calah”: one of the four cities built by Asshur, or by Nimrod in Asshur (Gen. 10:12). Some judge it to be “not identified”; but others trace it to ruins at 36° 12' N, 43° 10' E.
Strong’s Dictionary of Hebrew Words:
Meaning:
the same as 7448; Resen, a place in Assyrian
Jackson’s Dictionary of Scripture Proper Names:
a bridle
Potts’ Bible Proper Names:
A bridle; bit; to curb; to restrain:―a place in Assyria, Gen. 10:12. {Frenum}