headwall
noun
1
a
: a precipice rising above the floor of a glacial cirque
b
: a steep slope forming the head of a valley
2
: a wall of masonry or concrete built at the outlet of a drainpipe or culvert with the end of the conduit flush with the outer surface of the wall
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“Headwall.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/headwall. Accessed 28 Nov. 2024.
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