Concise Bible Dictionary:
1. Levitical city in Judah (Josh. 15:42; 1 Chron. 6:59): not identified.
2. City in Simeon (Josh. 19:7; 1 Chron. 4:32). See AIN.
Potts’ Bible Proper Names:
Smoke; dust; vapor; anger:―a city in Judah [CHORASHAN], Josh. 15:42. {Fumus}