Genesis 25:3
וְ יָקְשָׁן יָלַד אֶת שְׁבָא וְ אֶת דְּדָן וּ בְנֵי דְדָן הָיוּ אַשּׁוּרִם וּ לְטוּשִׁים וּ לְאֻמִּים
And Snare-Layer has begotten Seven and Low-Country. And the builders of Low-Country have become Successful-ones,* and Hammered-ones,* and United-ones.*
* Strong’s #3912, Letushim. From latash (#3913) to hammer (an edge), sharpen, whet. Basically forged swords.