🔼The name Chephirim in the Bible
It's not certain whether Chephirim is a name or not. As a matter of fact, only the New American Standard (NAS) translation of the Bible prints the name Chephirim here. All other major translations read "the villages". BDB Theological Dictionary, however, supports the decision of the NAS council, and equates Chephirim with Chephirah.
If it is a name, it's the name of a village or perhaps cluster of settlements on the plain of Ono, where Nehemiah was invited to for a meeting with Sanballat and Geshem, who didn't like the fact that the wall around Jerusalem had been resurrected. Nehemiah figured that these enemies of his were planning to harm him, and declined to show (Nehemiah 6:2).
Apparently, clusters like this were not uncommon in Israel. There is, for instance, the town called Netophah, which was the hub of a cluster of villages of the Netophathites, which also included Bethlehem of Judah.
🔼Etymology of the name Chephirim
The name Chephirim looks like a plural noun taken from any of the verbs כפר (kapar). But probably it was meant to be a plural of the noun כפר (kapar), meaning village:
Neither NOBSE Study Bible Name List nor Jones' Dictionary of Old Testament Proper Names treat the "name" Chephirim, and only BDB Theological Dictionary reads Villages.