Definition of esker
: a long narrow ridge or mound of sand, gravel, and boulders deposited by a stream flowing on, within, or beneath a stagnant glacier
Recent Examples of esker from the Web
Six miles through classic glacial topography, the trail tiptoeing along steep moraines and eskers that plunged on both sides into deep kettles, and dipping and climbing between those moraines on rocky, root-rich soil.
Debris dragged along the landscape deposited in rounded hills, or kames, along with steep ridges known as eskers and moraines; and deep holes were scooped from the earth to form kettles.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'esker.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of esker
Irish eiscir ridge
First Known Use: 1848See Words from the same year
Learn More about esker
Britannica.com: Encyclopedia article about esker
Seen and Heard
What made you want to look up esker? Please tell us where you read or heard it (including the quote, if possible).