from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An underground chamber or passage sometimes used as a store, especially one associated with Iron Age settlements.
from the GNU version of the Collaborative International Dictionary of English
- n. A grotto or cavern under ground.
from The Century Dictionary and Cyclopedia
- n. A grotto or cavern under ground; a cellar.
From French souterrain, from sous ‘under’ + terrain ‘ground’. (Wiktionary)