Definition of souterrain in English:

souterrain

noun

Archaeology
  • An underground chamber or passage.

    • ‘Irish houses, moreover, were now often built in close association with souterrains, stone-lined, underground passages, sometimes as much as 100 metres in length.’
    • ‘A sketch was made of the souterrain and it was found to be about 52 feet long.’
    • ‘A massive prehistoric underground bunker - or souterrain - has been excavated near Dundee.’
    • ‘The souterrain, a place of underground hiding for local people in the millennium before Christ, was discovered and restored by Keelan and his friends.’
    • ‘The situation in south-west England is broadly comparable to southern Scotland, with rounds (small enclosed homesteads), courtyard houses, and souterrains present, though only one villa has been recognized west of Exeter.’

Origin

Mid 18th century: from French, from sous ‘under’ + terre ‘earth’.

Pronunciation

souterrain

/ˈsuːtəreɪn/