erratic noun - Definition, pictures, pronunciation and usage notes | Oxford Advanced American Dictionary at OxfordLearnersDictionaries.com

Definition of erratic noun from the Oxford Advanced American Dictionary

erratic

noun

NAmE//ɪˈræt̮ɪk//

(also erratic block, erratic boulder) (geology)

a large rock that is different from the rock around and was left behind when a large mass of ice melted

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