'Lean' in the Bible

Then seven other cows came up after them; they were scrawny, very bad-looking, and lean. I had never seen such bad-looking cows as these in all the land of Egypt!

The lean, bad-looking cows ate up the seven fat cows.

The seven lean, bad-looking cows that came up after them represent seven years, as do the seven empty heads of grain burned with the east wind. They represent seven years of famine.