🔼The name Jaare-oregim in the Bible
The name Jaare-oregim occurs only once in the Bible. Jaare-oregim of Bethlehem is the father of Elhanan, who killed the giant Goliath the Gittite at Gob. This Goliath was one of four sons of the famous Goliath (2 Samuel 21:19).
In the parallel text of 1 Chronicles 20:5, the father of Elhanan is called Jair (which is like Jaare-oregim without the "oregim" part), and the giant he kills is called Lahmi, the brother of the famous Goliath.
🔼Etymology of the name Jaare-oregim
The name Jaare-oregim consists of two parts and the first part (יערי) is closely related to the name Jair (יעיר). So closely even that BDB assumes that Jaare is a scribal error for the name Jair, and relates both to the noun עור ('ir), meaning terror, from the verb עור ('ur), meaning to awake or rouse oneself. Note that this noun is identical to the nouns meaning city or wild ass:
NOBSE Study Bible Name List and Jones' Dictionary of Old Testament Proper Names disagree with BDB and go with the root group יער (y'r):
The second part of the name Jaare-oregim comes from the verb ארג ('arag), meaning to weave:
The "oregim" part of our name is the plural form of this verb used as a substantive.
For a meaning of the name Jaare-oregim, NOBSE Study Bible Name List reads Forest Of Weavers. Alfred Jones (Dictionary of Old Testament Proper Names) employs a rather free poetic interpretation and offers Tapestry Of The Weavers, assuming that the word for forest has to do with multifariousness. But this is probably incorrect.
BDB Theological Dictionary doesn't offer a translation but following its suggestions would probably arrive at something like Terror Of The Weavers. But since the word for terror is identical to the word for city, this name also means City Of Weavers, which makes the most sense of all the options. It may very well be that Jaare-oregim is not a personal name but a town under control of Bethlehem.