Strong's #8515: Tla'ssar (pronounced tel-as-sar')

or Tlassar {tel-as-sar'}; of foreign derivation; Telassar, a region of Assyria:--Telassar.

Brown-Driver-Briggs Hebrew Lexicon:

ּּׂ / ּּׂ

tela'śśar / telaśśar

Telassar or Thelasar = "Assyrian hill"

1) a city conquered and held by the Assyrians located apparently in Mesopotamia

Part of Speech: noun proper locative

Relation: of foreign derivation

Usage:

This word is used 2 times:

 

2 Kings 19:12: "and the children of Eden which were in Thelasar?"
Isaiah 37:12: "and the children of Eden which were in Telassar?"