There are 2 definitions of Boulder in English:


Syllabification: Boul·der
Pronunciation: /ˈbōldər
  • A city in north central Colorado, northwest of Denver, home to the University of Colorado; population 94,171 (est. 2008).

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day skosh
Pronunciation: skōSH
a small amount; a little

There are 2 definitions of Boulder in English:


Syllabification: boul·der
Pronunciation: /ˈbōldər


  • A large rock, typically one that has been worn smooth by erosion.
    More example sentences
    • The organisation said the most numerous relics were rock carvings found on boulders and outcrops.
    • The trail narrowed, weaving round giant boulders and overhangs of smooth rock.
    • The reverie was broken as if someone hurled a boulder into a smooth flowing stream.



More example sentences
  • A bouldery summit with a large cairn looms large, fooling many into believing this is the summit.
  • The Spey snakes between rolling hills, with stretches of bouldery rapids and limpid pools where salmon leap and plop.
  • Flanagan lowered his close-shaved, bouldery head, studied me with unwavering eyes, then took a swallow from his pint.


late Middle English: shortened from earlier boulderstone, of Scandinavian origin.

More definitions of Boulder

Definition of boulder in: