head wall

  1. a cliff or steep slope rising at one end of a glaciated valley.

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

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Scientific definitions for headwall


[ hĕdwôl′ ]

  1. 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.