a cliff or steep slope rising at one end of a glaciated valley.
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Origin of head wall
First recorded in 1640–1650 for an earlier sense “retaining wall built in front or on top of a structure”; current sense dates from 1790–1800
Words nearby head wall
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Example sentences from the Web for head wall
These little underground runlets are the same that glide over the head-wall, and are the head tributaries of the Ellis.
From the bowlders up the head-wall, and through the gate-way, the climb is arduous; and the way is not very distinctly marked.
Scientific definitions for head wall
[ hĕd′wôl′ ]
A steep slope or precipice rising at the head of a valley or glacial cirque.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.