land·slide 
(lăndslīd′)
(lăndslīd′)n.
1.
a. The downward sliding of a relatively dry mass of earth and rock.
b. The mass that slides. Also called landslip.
2.
a. A percentage of votes greatly exceeding the required margin of victory.
b. An election that sweeps a party or candidate into office.
3. A great victory.
landslid′ing n.