Laish: the Canaanite city at the far northern edge of the land that the tribe of Dan captured, burned, and renamed Dan
Laish was a Canaanite city at the northern limit of the land, beside the springs that feed the Jordan below Mount Hermon. Judges 18 tells how five scouts from the tribe of Dan, who had never secured territory in the south, found its people living quietly and confidently, far from Sidon and with no allies to call on. The tribe attacked, burned the city, settled there, and renamed it Dan (דָּן) after their ancestor. From then on the Bible calls the place Dan, and Judges 18:29 pauses to record that Laish had been its name before.
The same city carries a second spelling elsewhere: Joshua 19:47 tells the story with the name Leshem (לֶשֶׁם). Almost everyone takes the two as one place, though how the two forms are related has never been settled.
The site is well known today as Tel Dan, one of the most thoroughly excavated mounds in Israel, and records from outside the Bible name the city centuries before the Israelites arrived: Egyptian curse texts, a list of towns conquered by Thutmose III, and an eighteenth century BC document from Mari recording tin shipped west to a man at Laish. Whether the name itself means "lion", from the rare poetic Hebrew word spelled exactly the same way (לַיִשׁ), is a traditional guess that has never been proved. The city was Canaanite rather than Israelite, so its name may not be Hebrew at all.