boulder

noun

boul·​der ˈbōl-dər How to pronounce boulder (audio)
variants or less commonly bowlder
: a detached and rounded or much-worn mass of rock
bouldered adjective
bouldery adjective

Examples of boulder in a Sentence

Recent Examples on the Web Hard Science Rover images confirm Jezero crater is an ancient Martian lake The findings include signs of flash flooding that carried huge boulders downstream into the lakebed. Big Think, 24 June 2024 During the ordeal, Kennedy and Christina were nearly pushed by strong currents into a boulder, crash-landed on a beach and at several points were plunged underwater. Martha Ross, The Mercury News, 18 June 2024 The machine momentarily pitched forward, straining to loosen it from the ground — and then the electric motor heaved the boulder and a clod of dirt into the air in a puff of dust. Nicolás Rivero, Washington Post, 17 June 2024 The soil could no longer absorb rainwater, which then ran off the landscape, picking up sediment and boulders on its way down the mountains. Hayleigh Evans, The Arizona Republic, 14 June 2024 See all Example Sentences for boulder 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'boulder.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

short for boulder stone, from Middle English bulder ston, partial translation of a word of Scandinavian origin; akin to Swedish dialect bullersten large stone in a stream, from buller noise + sten stone

First Known Use

1607, in the meaning defined above

Time Traveler
The first known use of boulder was in 1607

Dictionary Entries Near boulder

Cite this Entry

“Boulder.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/boulder. Accessed 2 Jul. 2024.

Kids Definition

boulder

noun
boul·​der ˈbōl-dər How to pronounce boulder (audio)
: a large detached and rounded or worn mass of rock

Geographical Definition

Boulder

geographical name

Boul·​der ˈbōl-dər How to pronounce Boulder (audio)
city northwest of Denver in north central Colorado population 97,385

More from Merriam-Webster on boulder

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