n. 山崩

[ noun ]
a slide of a large mass of dirt and rock down a mountain or cliff
<noun.event>

Landslide \Land"slide`\, Landslip \Land"slip`\, n.
1. The slipping down of a mass of land from a mountain, hill,
etc.

2. The land which slips down.

3. An election victory in which the winning candidate
receives a substantial majority of the votes, usually
meaning at least ten per cent more than any opposing
candidate.
[PJC]

4. Any overwhelming victory.
[PJC]