highwall

[ hahy-wawl ]
/ ˈhaɪˌwɔl /

noun

the unexcavated face of exposed overburden and coal in a surface mine.

Origin of highwall

high + wall

Words nearby highwall

hight, hightail, hightail it, highty-tighty, highveld, highwall, highway, highway code, highway contract route, highway patrol, highway robbery