Landslide n. : The slipping down of a mass of land from a mountain, hill, etc.

Landslide n. : The land which slips down.

Example:
What do you consider a Landslide in the electoral college?

Taxonomy
landslide, slope, mudslide, landslide hazard, soils, debris flow, China, factors, debris avalanche, Peru, Causes of landslides, shallow, Massive landslides, debris, slope failure, Remote sensing, Japan, susceptibility.

Defination from the web:
landslide (or landslip) is a geological phenomenon which includes a wide range of ground movement, such as rock falls, deep failure of slopes ... The Mameyes Landslide, which, buried more than 100 homes, was caused by extensive accumulation of rains and, according to some sources, lightning. ...