mountain

American  

[moun-tn] / ˈmaʊn tn /

noun

1. a natural elevation of the earth's surface rising more or less abruptly to a summit, and attaining an altitude greater than that of a hill, usually greater than 2,000 feet (610 meters).

2. a large mass of something resembling this, as in shape or size.

3. a huge amount.

   a mountain of incoming mail.

4. (initial capital letter) a steam locomotive having a four-wheeled front truck, eight driving wheels, and a two-wheeled rear truck.

5. Also called mountain wine.  British Archaic. a sweet Malaga wine.

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adjective

1. of or relating to mountains.

   mountain air.

2. living, growing, or located in the mountains.

   mountain people.

3. resembling or suggesting a mountain, as in size.

idioms

1. make a mountain out of a molehill. molehill.

mountain ¹ British  

/ ˈmaʊntɪn /

noun

1. 1. a natural upward projection of the earth's surface, higher and steeper than a hill and often having a rocky summit

   2. ( as modifier )

      mountain people

      mountain scenery

   3. ( in combination )

      a mountaintop

2. a huge heap or mass

   a mountain of papers

3. anything of great quantity or size

4. a surplus of a commodity, esp in the European Union

   the butter mountain

5. informal a serious or considerable difficulty or obstruction to overcome

6. See molehill

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Mountain ² British  

/ ˈmaʊntɪn /

noun

1. an extremist faction during the French Revolution led by Danton and Robespierre

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mountain Scientific  

/ moun′tən /

1. A generally massive and usually steep-sided, raised portion of the Earth's surface. Mountains can occur as single peaks or as part of a long chain. They can form through volcanic activity, by erosion, or by uplift of the continental crust when two tectonic plates collide. The Himalayas, which are the highest mountains in the world, were formed when the plate carrying the landmass of India collided with the plate carrying the landmass of China.

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mountain More Idioms  

1. see if the mountain won't come to Muhammad; make a mountain out of a molehill.

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Other Word Forms

• mountainless adjective
• submountain adjective
• undermountain noun

Etymology

Origin of mountain

First recorded in 1175–1225; Middle English mountaine, from Old French montaigne, from Vulgar Latin montānea (unrecorded), noun use of feminine of montāneus (unrecorded), from Latin montān(us) “mountainous” (from mont-, stem of mōns “hill, mountain” + -ānus -an ) + -eus, adjective suffix

Explanation

A mountain is a large and often steep landmass that's much higher than the surrounding area. It's not to be confused with a molehill. The word mountain has been around since the 1200s. A mountain is much larger than an average hill; it's a mass of land that rises up to 2000 feet or so. Mountain does not always describe a land mass. It can also be used to refer to an undertaking, a pile of something, or even a large dose of trouble. You might have a mountain of mashed potatoes you don't want to eat, or a mountain of homework.

Example Sentences

Writing on his fundraising page, Parrish said mountain rescue team volunteers searched tirelessly for Luke and were available ''365 days a year to respond to emergencies in the mountains and remote areas of Scotland''.

From BBC • Apr. 14, 2026

“The phone continues to ring,” Tim Foster, chief of mountain operations at Sun Peaks, told me.

From Slate • Apr. 11, 2026

Some pieces, including his Coachella astronaut, mountain lion and turtle, are now listed for thousands in online forums and on eBay.

From Los Angeles Times • Apr. 10, 2026

Rainfall totals of half an inch to 1.5 inches are expected in the mountain and foothill regions, and there is a chance of a dusting of snow in areas above 6,000 feet elevation.

From Los Angeles Times • Apr. 10, 2026

I screamed like a mountain lion and fell to the ground and rolled, throwing mud and dirt all over, but those pixies bit my nose, my cheeks, my ears, and all ten of my fingers.

From "Rump: The (Fairly) True Story of Rumpelstilskin" by Liesl Shurtliff

Related Words

• alp
• bluff
• butte
• cliff
• crag
• elevation
• eminence
• height
• mesa
• mount
• palisade
• peak
• pike
• precipice
• range
• ridge
• sierra
• tor
• volcano