A steep slope or precipice rising at the head of a valley or glacial cirque. (geography) The highest cliff of a glacial cirque.

What is the point of a headwall?

A headwall is a wall, made of a variety of materials, often placed at the outfall of a drain or a culvert to serve as a retaining wall and protect fill from scour or undermining, increase hydraulic efficiency or divert the direction of flow.

What is a mountain headwall?

In physical geography and geology the headwall of a glacial cirque is its highest cliff. ... In medicine, a headwall is the wall at the head end of a hospital bedspace.