UNDERGROUND
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.
UNDERGROUND
Un"der*ground`, adv.
Defn: Beneath the surface of the earth.
UNDERGROUND INSURANCE
Un"der*ground` in*sur"ance.
Defn: Wildcat insurance.
UNDERGROVE
Un"der*grove`, n.
Defn: A grove of shrubs or low trees under taller ones. Wordsworth.
UNDERGROW
Un`der*grow", v. i.