noun
mountain snow; snow that falls on mountains
Refers specifically to snow falling in mountainous areas, often contrasted with 里雪 (snow falling in inhabited lowland areas).
See also: 里雪
今夜は山雪が降り続くでしょう。
Mountain snow will continue to fall tonight.
山雪のため、峠の道路は通行止めになった。
The mountain pass road was closed due to mountain snow.