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boulder

nounverbattested in dialogue

  • United Kingdom//ˈbəʊl.də(ɹ)//
  • United States//ˈboʊl.dɚ//

A large mass of stone detached from the surrounding land.

noun

  1. 1

    A large mass of stone detached from the surrounding land.

  2. 2

    A particle greater than 256 mm in diameter, following the Wentworth scale

  3. 3

    A large marble, in children's games.

    There were four sizes of marbles and we called them boulders, biggies, regulars, and teenies.

  4. 4

    A session of bouldering; involvement in bouldering.

Etymology

From late Middle English bulder, short for Middle English bulder ston (“a stone that's been worn into a round shape, boulder, cobblestone”), possibly from Old Swedish *buldersten, itself possibly from Old Swedish bulder (“rumble, noise”) + sten (“stone”); whence dialectal Swedish bullersten (“large stone in a stream, causing water to roar around it”). The first element may alternatively be allied to Old Swedish bulle, bolle (“round drinking vessel, tumbler”), from Old Norse bolli, related to Old English bolla (“round object, bowl”), see English bowl.

verb

  1. 1

    To engage in bouldering.

    He bouldered a route in the same area with ease. Mitchell, 11, was hanging with the older kids in an area where bouldering nearly upside down seemed to be....

    As the week unfolded, we were taught about the equipment we needed, how to tie a rope and what to wear. We learnt to balance on our feet rather than cling on with our arms and to trust our rock shoes, the moulded rubber slippers that can grip the smoothest of surfaces. We abseiled, bouldered and belayed.

    There's even old climbing hardware in it because people bouldered on it for years.

Forms

plural
boulders
past tense
bouldered
past participle
bouldered
present participle
bouldering
third person singular
boulders
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).