noun
snowscape; world covered in snow
A poetic or literary term for a landscape blanketed in snow, often evoking a silvery, pristine scene.
窓の外は一面の銀世界だった。
Outside the window was a complete snowscape.
雪景色 is a more common, everyday word for a snowy scene, while 銀世界 carries a more poetic, literary nuance.
Compound of 銀 (gin, 'silver') and 世界 (sekai, 'world'), referring to a world that looks silvery because of snow.