'Sleek' in the Bible

And lo, from the Nile there came up seven cows, sleek and fat; and they grazed in the marsh grass.

The ugly and gaunt cows ate up the seven sleek and fat cows. Then Pharaoh awoke.

and behold, seven cows, fat and sleek came up out of the Nile, and they grazed in the marsh grass.

“But Jeshurun grew fat and kicked—You are grown fat, thick, and sleek—Then he forsook God who made him,And scorned the Rock of his salvation.

They have become fat and sleek.They have also excelled in evil matters.They have not taken up cases,such as the case of the fatherless, so they might prosper,and they have not defended the rights of the needy.