Genesis 50:11

When the Canaanites of the land saw the mourning at the threshing floor of Atad, they said, “This is a solemn ceremony of mourning by the Egyptians.” Thus the place across the Jordan is called Abel-mizraim.

Note Abel-mizraim means mourning of the Egyptians.

BSB · Berean Standard Bible
And when the inhabitants of the land, the Canaanites, saw the mourning in the floor of Atad, they said, This is a grievous mourning to the Egyptians: wherefore the name of it was called Abel-mizraim, which is beyond Jordan.

Note Abel-mizraim: that is, The mourning of the Egyptians

KJV · King James Version
When the inhabitants of the land, the Canaanites, saw the mourning in the floor of Atad, they said, “This is a grievous mourning by the Egyptians.” Therefore its name was called Abel Mizraim, which is beyond the Jordan.
WEB · World English Bible
And when the inhabitants of the land, the Canaanites, saw the mourning in the floor of Atad, they said, This is a grievous mourning to the Egyptians: wherefore the name of it was called Abel-mizraim, which is beyond the Jordan.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

the Canaanites
Genesis 10:15–19; Genesis 13:7; Genesis 24:6; Genesis 34:30
Abel-mizraim
i.e., The mourning of the Egyptians.
1 Samuel 6:18
beyond Jordan
Genesis 50:10; Deuteronomy 3:25, 27; Deuteronomy 11:30