landslide

UK: /ˈlændslaɪd/ US: /ˈlændˌslaɪd/ ,(land′slīd′)

WordReference Random House Learner's Dictionary of American English © 2025

land•slide /ˈlændˌslaɪd/   n. [countable]

1. Geology the falling or sliding of a mass of soil or rock on or from a steep slope.
2. Government an election in which a particular candidate or party receives an overwhelming number of votes.
3. any overwhelming victory.

WordReference Random House Unabridged Dictionary of American English © 2025

land•slide  (land′slīd′), n., v., -slid, -slid or -slid•den, -slid•ing. 
n. 

1. Geology the downward falling or sliding of a mass of soil, detritus, or rock on or from a steep slope.
2. Geology the mass itself.
3. Government an election in which a particular victorious candidate or party receives an overwhelming mass or majority of votes:
   the 1936 landslide for Roosevelt.
4. any overwhelming victory:
   She won the contest by a landslide.

v.i. 

5. Geology to come down in or as in a landslide.

to win an election by an overwhelming majority. Also called,[esp. Brit.,] land•slip  (land′slip′) (for defs. 1, 2).

• land + slide 1830–40, American.

Collins Concise English Dictionary © HarperCollins Publishers::

landslide / ˈlændˌslaɪd/ noun

1. Also called: landslip the sliding of a large mass of rock material, soil, etc, down the side of a mountain or cliff
2. the material dislodged in this way
3. an overwhelming electoral victory