A rock; boulder; a hill.

A visible mass of water droplets suspended in the air.

Any mass of dust, steam or smoke resembling such a mass.

To become foggy or gloomy, or obscured from sight.

“The glass clouds when you breathe on it.”

To overspread or hide with a cloud or clouds.

“The sky is clouded.”

To make obscure.

“All this talk about human rights is clouding the real issue.”