I. | ̷ ̷ ̷ ̷| ̷ ̷ noun
1. : a mine working in which excavation is performed from the surface — compare strip mine
2. : a trench for the passage of a roadway or railway through an obstruction (as a hill) — distinguished from tunnel
II. adverb (or adjective)
: with the surface exposed to the air or worked from the exposed surface
an opencut iron mine
a copper mine worked opencut