Meaning: This means that the moonlight is creating patterns of light and shadow on the wall.
Choice of Words: Moonlight is the light from the moon. Paint means to apply a liquid or powder to a surface to create an image or design. Shadow is a dark area that is formed when an object blocks light. Wall is a vertical structure that separates or encloses an area. When you put them together, it describes the effect of moonlight creating patterns of light and shadow on a wall.