Bible Meaning: Fissure, to break through, a boiling spring
Strong's Concordance #H3962
Lasha is recorded only once in the King James Old Testament. It is found in the first Biblical passage that reveals the original borders of the land of Canaan and who were its first inhabitants.
Canaan initally ran down the Mediterranean coast from Sidon to Gaza, then across to the Dead Sea. Though not listed, the inclusion of the Zemarites (from Sumur) and Hamathites shows that Canaan also included a part of Syria (Eerdmans Commentary on the Bible).
Lasha was on the original eastern border of the land of Canaan. Although it is listed with cities such as Sodom, Gomorrah and others located on a plain south of the Dead Sea, the exact location of Lasha is unknown (Genesis 10:19).
Genesis 10:15 - 19
And Canaan begat Sidon his firstborn, and Heth, and the Jebusite, and the Amorite, and the Girgasite, and the Hivite, and the Arkite, and the Sinite, and the Arvadite, and the Zemarite, and the Hamathite: and afterward were the families of the Canaanites spread abroad.
And the border of the Canaanites was from Sidon, as thou comest to Gerar, unto Gaza; as thou goest, unto Sodom, and Gomorrah, and Admah, and Zeboim, even unto Lasha.