noun, often attributive
moun·​tain | \ ˈmau̇n-tᵊn How to pronounce mountain (audio) \

Definition of mountain

1a : a landmass that projects conspicuously above its surroundings and is higher than a hill The sun set behind the mountains.
b : an elongated ridge
2a : a great mass a mountain of a man— E. K. Brown
b : a vast number or quantity a mountain of mail a mountain of debt

Keep scrolling for more

Synonyms for mountain


alp, hump, mount, peak

Visit the Thesaurus for More 

Examples of mountain in a Sentence

She watched the sun set behind the mountains. a cabin in the mountains They both like mountain climbing. We've received a mountain of mail.
See More

Recent Examples on the Web

Find the nearest mountain, hill, lake, state park, or local trail. James Lynch, Popular Mechanics, "The Best Hiking Boots for Exploring the Outdoors," 9 Apr. 2019 If the Dream House vignette didn’t tip you off, then the mountains of miniature cupcakes, suspended mid-air by a bouquet of balloons surely would: Barbie was turning 60, and in her usual fun-loving decadence, the celebration was no small affair. Zachary Weiss, Vogue, "Yara Shahidi Is a Barbie Girl: The Actress Celebrates the Doll’s 60th Anniversary," 12 Mar. 2019 The highlight of Diana Ross’ night was the cute introduction by a grandson with a mountain of hair. David Bauder, The Seattle Times, "Rap artists and women take center stage at Grammy Awards," 11 Feb. 2019 That means creating mountains of personal stuff in categorical heaps and owning up to mankind’s extraordinary ability to accumulate. Lonnie Firestone, Glamour, "It Took a Fire in My Building to Understand Marie Kondo's Method," 15 Jan. 2019 Despite a mountain of evidence and bad movie cameos to dispute this, Kelley insisted that professional athletes could in fact make good actors. Andrew Keh, New York Times, "Neymar and the Art of the Dive," 5 July 2018 This was despite mountains of evidence pointing to the benefits of aerobic exercise for mental health. Brad Stulberg, Outside Online, "Lifting Weights Helps Ease Anxiety and Depression," 5 July 2018 The traveling sargassum is often accompanied by mountains of plastic trash. Jacob Sweet, miamiherald, "Lots of sun, and brown slimy seaweed, in the forecast for South Florida beaches," 3 July 2018 In vibrant colors and multiple dimensions are the mountains of Denali in Alaska, the bobcat of Arches National Park in Utah, the bison of Theodore Roosevelt National Park in North Dakota, and the striking flowers of Big Bend in Texas. Susan Demar Lafferty, Daily Southtown, "Traveling art exhibit on national parks opens in Will County," 19 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mountain.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of mountain

13th century, in the meaning defined at sense 1a

History and Etymology for mountain

Middle English, from Anglo-French muntaine, from Vulgar Latin *montanea, from feminine of *montaneus of a mountain, alteration of Latin montanus, from mont-, mons

Keep scrolling for more

Learn More about mountain

Statistics for mountain

Last Updated

19 Apr 2019

Look-up Popularity

Time Traveler for mountain

The first known use of mountain was in the 13th century

See more words from the same century

Keep scrolling for more

More Definitions for mountain



English Language Learners Definition of mountain

: an area of land that rises very high above the land around it and that is higher than a hill
: a very large amount of something


moun·​tain | \ ˈmau̇n-tᵊn How to pronounce mountain (audio) \

Kids Definition of mountain

1 : a raised area of land higher than a hill
2 : a great mass or huge number a mountain of mail

Keep scrolling for more

Comments on mountain

What made you want to look up mountain? Please tell us where you read or heard it (including the quote, if possible).


to move or proceed with twists and turns

Get Word of the Day daily email!

Test Your Vocabulary

Words from Greek and Latin Quiz

  • roman forum
  • Which of the following months comes from a Latin word for “ten”?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!