drumlin
noun
drum·lin ˈdrəm-lən 
: an elongate or oval hill of glacial drift
Example Sentences
Recent Examples on the Web Try the Parnell segment for an especially hilly hike along glacial features including moraines, kettles, eskers and drumlins. 
Chelsey Lewis, Milwaukee Journal Sentinel, 17 May 2018 At the very back of his lot his garden pitches upward — as the property was a glacial drumlin. Joanne Kempinger Demski, Milwaukee Journal Sentinel, 25 June 2017 Moraines and gentle drumlins rose and fell along the riverside, creating miniature highlands shrouded in red oak and sugar maple. Porter Fox, New York Times, 19 Aug. 2016
Chelsey Lewis, Milwaukee Journal Sentinel, 17 May 2018 At the very back of his lot his garden pitches upward — as the property was a glacial drumlin. Joanne Kempinger Demski, Milwaukee Journal Sentinel, 25 June 2017 Moraines and gentle drumlins rose and fell along the riverside, creating miniature highlands shrouded in red oak and sugar maple. Porter Fox, New York Times, 19 Aug. 2016 Word History
Etymology
Irish druim back, ridge (from Old Irish druimm) + English -lin (alteration of -ling)
First Known Use
1812, in the meaning defined above
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