Definition of "esker" [esker]

• A long, narrow ridge of coarse gravel deposited by a stream flowing in or under a decaying glacial ice sheet. Also called os3. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "This word came from the Basque word esker, and perhaps more noticeably, from the unrecorded Basque derivative ezkerdo."
• "That particular esker just gets too crowded for me."
• "Such darkly shadowed taluses under an open, light-filled firmament just waiting to ravenously warm every windblown, cascading, double-trunked forest shrub and errant piece of fossilized driftwood on the esker."