Un"der*ground` , adv. Beneath the surface of the earth.
Un"der*ground` , a.
1. Being below the surface of the ground; as, an underground story or apartment.
2. Done or occurring out of sight; secret. [Colloq.]
Underground railroad or railway.
See under Railroad.
Un"der*ground` (?), n.
The place or space beneath the surface of the ground; subterranean space.
A spirit raised from depth of
underground.
Shak.
Hear it pronounced