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

drumlin

noun
 
/ˈdrʌmlɪn/
 
/ˈdrʌmlɪn/
(geology)
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  1. a very small hill formed by the movement of a glacier (= a large moving mass of ice)Topics Geographyc2
    Word Originmid 19th cent.: probably from drum ‘a long narrow hill’ + -lin (from -ling).
See drumlin in the Oxford Advanced American Dictionary
previously
adverb
 
 
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