miner Definition

to dig under to gain access or cause the collapse of (an enemy position)

undermine

to get (something, such as ore) from the earth

a glossy green herb (Montia perfoliata synonym Claytonia perfoliata) of the purslane family especially of western North America that produces racemes of pink to white flowers subtended by a disk of two leaves united around the stem and is used as a salad green

any of various small insects (such as moths or dipteran flies) that in the larval stages burrow in and eat the parenchyma of leaves

a mine that is worked from the earth's surface by the stripping of overburden; especially : a coal mine situated along the outcrop of a flat dipping bed