1 occurring, situated, used, or going below ground level
an underground tunnel, an underground explosion
2 secret; hidden
3 a space or region below ground level
a a movement dedicated to overthrowing a government or occupation forces, as in the European countries occupied by the German army in World War II
b (as modifier)
an underground group
5 often preceded by: the an electric passenger railway operated in underground tunnels, (U.S. and Canadian equivalent)
6 usually preceded by: the
a any avant-garde, experimental, or subversive movement in popular art, films, music, etc.
b (as modifier) the underground press, underground music
n often caps (in the pre-Civil War U.S.) the system established by abolitionists to aid escaping slaves
n the. U.S. avant-garde rock group (1965--70): originally comprised Lou Reed, John Cale (born 1940; bass guitar and viola), Sterling Morrison (1942--95; guitar), and Maureen Tucker (born 1945; drums). Their albums include The Velvet Underground and Nico (1967), White Light/White Heat (1967), and Loaded (1970)
See also (Lou) →
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