drumlin

American  

[druhm-lin] / ˈdrʌm lɪn /

noun

Geology.

1. a long, narrow or oval, smoothly rounded hill of unstratified glacial drift.

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drumlin British  

/ ˈdrʌmlɪn /

noun

1. a streamlined mound of glacial drift, rounded or elongated in the direction of the original flow of ice

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drumlin Scientific  

/ drŭm′lĭn /

1. An extended, oval hill or ridge of compacted sediment deposited and shaped by a glacier. Drumlins are typically about 30 m (98 ft) high and are longer than they are wide. They have one steep and one gentle slope along their longest axis, which is parallel to the direction of the glacier's movement. The steepest slope faces the direction from which the glacier originated, and the gentler slope faces the direction in which the glacier was advancing.

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Etymology

Origin of drumlin

1825–35; drum ² + -lin, variant of -ling ¹

Example Sentences

Erin Hills in Wisconsin just opened The Drumlin, Dana Fry’s wildly contoured putting course with indirect night lighting that accentuates the contours.

From Golf Digest • Mar. 24, 2020

Drumlin Wind Energy Co-operative has plans to operate five 250kW turbines north of Belfast, and has already raised £1.6m, which will fund the first two.

From The Guardian • Oct. 12, 2012