THE FULL ARTICLE — from the International Standard Bible Encyclopedia

The International Standard Bible Encyclopedia (1915), general editor James Orr — public domain, printed whole.

el'-a-sa, ele-a'sa (Alasa; the King James Version Eleasa):

The place where Judas pitched his camp before the battle in which he was overwhelmed and slain (APC 1Macc 9:5).

It probably corresponds to the modern Khirbet il`asa, between the two Beth-horons.