'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 are fat, they are sleek,They also excel in deeds of wickedness;They do not plead the cause,The cause of the orphan, that they may prosper;And they do not defend the rights of the poor.