'Palm trees' in the Bible

And the children of the Kenite, Moses' father-in-law, went up out of the city of palm trees, with the children of Judah, into the wilderness of Judah that lieth in the South of Arad, and dwelt among the people.

And this Eglon gathered unto him the children of Ammon, and the Amalekites, and went and smote the children of Israel, and conquered the city of palm trees.