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rimrock

noun rim·rock \ ˈrim-ˌräk \

Definition of rimrock

1 :a top stratum or overlying strata of resistant rock of a plateau that outcrops to form a vertical face
2 :the edge or face of a rimrock outcrop

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These example sentences are selected automatically from various online news sources to reflect current usage of the word 'rimrock.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of rimrock

1860

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