underground
Concise Oxford English Dictionary © 2008 Oxford University Press:
underground/ˈʌndəɡraʊnd/
▶adjective & adverb
- 1 beneath the surface of the ground.
- 2 in secrecy or hiding, especially as a result of carrying out subversive political activities.
- 3 seeking to explore alternative forms of lifestyle or artistic expression; radical and experimental.
- 1 (often the Underground) Brit. an underground railway, especially the one in London.
- 2 a group or movement organized secretly to work against an existing regime.
- 3 a group or movement seeking to explore alternative forms of lifestyle or artistic expression.
'underground' also found in these Oxford entries:
beer cellar
- bulb
- bumblebee
- bunker
- burrawang
- bury
- carfare
- catacomb
- cave
- cesspool
- choke-damp
- coalfield
- corm
- crypt
- dome
- dowse
- dugout
- dungeon
- earth
- estufa
- fogou
- gallery
- gnome
- ground elder
- groundwater
- herbaceous perennial
- hydrogeology
- hypogeal
- hypogeum
- infernal
- kiva
- kobold
- mastaba
- metro
- mining bee
- mole rat
- natural gas
- peanut
- phreatic
- pillbox
- potato
- pothole
- resistance
- rhizome
- road
- sandhog
- sap
- seam
- septic tank
- sewer

