English

Definition of boulder noun from the Oxford Advanced Learner's Dictionary

 

boulder

 noun
noun
BrE BrE//ˈbəʊldə(r)//
 
; NAmE NAmE//ˈboʊldər//
 
 
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a very large rock which has been shaped by water or the weather huge granite boulders underneath the cliff fallen rocks and boulders As the ice sheet rode over the land, huge boulders were ripped from the underlying rock. Word Origin late Middle English: shortened from earlier boulderstone, of Scandinavian origin.
See the Oxford Advanced American Dictionary entry: boulder

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