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boulder

noun boul·der \ˈbōl-dər\

Simple Definition of boulder

  • : a very large stone or rounded piece of rock

Source: Merriam-Webster's Learner's Dictionary

Full Definition of boulder

  1. :  a detached and rounded or much-worn mass of rock

bouldered play \-dərd\ adjective
bouldery play \-d(ə-)rē\ adjective

Variants of boulder

also bowlder \ˈbōl-dər\

Origin of boulder

short for boulder stone, from Middle English bulder ston, part 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: 1617

Rhymes with boulder


Boulder

play
geographical name Boul·der \ˈbōl-dər\

Definition of Boulder

  1. city N cen Colorado pop 97,385




BOULDER Defined for Kids

boulder

noun boul·der \ˈbōl-dər\

Definition of boulder for Students

  1. :  a very large rounded piece of rock





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