Boulder

/'bouldə/ Cách viết khác : (bowlder) /'bouldə/
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Definition
  1. Noun:
    • A large, rounded rock: A boulder is a very large stone, typically one that has been worn smooth by water or weather over time. It is larger than a cobble or a stone.
    • A detached rock mass: In geology, a boulder is a rock fragment, often rounded, that has been moved from its original location by natural forces like glaciers, rivers, or weathering.
Examples
  • Noun:
    • The hikers rested on a large boulder by the river.
    • The ancient glacier left many boulders scattered across the valley.
    • Climbing over the boulder was the most difficult part of the trail.
Advanced Usage
  • "Boulder field": An area covered with many boulders.
    • The trail crosses a dangerous boulder field near the summit.
  • "Boulder clay": A geological deposit containing boulders mixed with clay, often left by glaciers.
    • The soil here is mostly boulder clay, making it difficult to farm.
Variants and Related Words
  • Bouldering (n): A form of rock climbing performed on small rock formations or artificial walls without ropes.
    • She enjoys bouldering at the gym.
  • Bowlder (n): An archaic or alternative spelling of "boulder".
  • Bouldery (adj): Characterized by or full of boulders.
    • The bouldery beach was difficult to walk on.
Synonyms
  • Rock: A general term for a solid mineral mass.
  • Stone: A small piece of rock.
  • Monolith: A large single upright block of stone.
Related Phrases
  • To be between a rock and a hard place: To be in a difficult situation with two equally unpleasant choices. (Note: This idiom uses "rock," not "boulder," but is conceptually related.)
    • I'm between a rock and a hard place with this decision.
Notes on Different Meanings
  • Boulder (Proper Noun): The word can also be a place name, such as Boulder, Colorado, USA. This usage is always capitalized.
    • She moved to Boulder to attend the university.
  • The primary definition discussed here is the common noun referring to a large rock.
Noun
  1. a town in north central Colorado; Rocky Mountains resort center and university town
  2. a large smooth mass of rock detached from its place of origin

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