Quiz: Remember the definition of mal de mer?


[druhm-lin] /ˈdrʌm lɪn/
noun, Geology
a long, narrow or oval, smoothly rounded hill of unstratified glacial drift.
1825-35; drum2 + -lin, variant of -ling1 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
Examples from the web for drumlin
  • The writer prefers to restrict the name drumlin to those drift hills which show clearly the molding effect of the advancing ice.
  • Soils in the drumlin are described as dense silty to gravelly loam.
British Dictionary definitions for drumlin


a streamlined mound of glacial drift, rounded or elongated in the direction of the original flow of ice
Word Origin
C19: from Irish Gaelic druim ridge + -lin-ling1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Cite This Source
Word Origin and History for drumlin

1833, diminutive of drum (1725) "ridge or long, narrow hill," often separating two parallel valleys, from Gaelic and Irish druim "back, ridge."

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
drumlin in Science

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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Encyclopedia Article for drumlin

oval or elongated hill believed to have been formed by the streamlined movement of glacial ice sheets across rock debris, or till. The name is derived from the Gaelic word druim ("rounded hill," or "mound") and first appeared in 1833.

Learn more about drumlin with a free trial on
Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source

Word of the Day

Difficulty index for drumlin

Few English speakers likely know this word

Word Value for drumlin

Scrabble Words With Friends

Nearby words for drumlin