- a subterranean passage or structure; grotto.
Origin of souterrain
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for souterrain
In many cases we do find the entrance to a souterrain is in a fort.
It is a souterrain situated in Glenshesk, about three miles from Ballycastle.
It is a small fort, and on the top we saw the narrow entrance to the souterrain.
My best thanks are also due to Mrs. Hobson for allowing me to make use of her photograph of the entrance to this souterrain.
She describes it as "a souterrain containing six chambers, with a length of eighty-seven feet exclusive of a flooded chamber."
- archaeol an underground chamber or passage
C18: from French
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012