Resen

Concise Bible Dictionary:

The great city “between Nineveh and Calah”: one of the four cities built by Asshur, or by Nimrod in Asshur (Gen. 10:1212And Resen between Nineveh and Calah: the same is a great city. (Genesis 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:

Number:
7449 (find all occurrences in KJV Bible)
Transliteration:
Recen
Phonic:
reh’-sen
Meaning:
the same as 7448; Resen, a place in Assyrian
KJV Usage:
Resen

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}