Moonlight bathed the room in silver.

Meaning: This means that the moonlight made the room look like it was covered in silver.

Choice of Words: Bathed is a verb that means to wash or immerse something in a liquid. Moonlight is the light from the moon. Room is an enclosed space within a building. Silver is a shiny, white metal. When you put them together, "Moonlight bathed the room in silver" means that the moonlight filled the room with a silvery glow.