fortress

Noun
  1. A fortified defensive structure (synset 103390857)
    is a type of: defence, defense, defensive structure - a structure used to defend against attack
    subtypes:
    • alcazar - any of various Spanish fortresses or palaces built by the Moors
    • martello tower - a circular masonry fort for coastal defence
    • presidio - a fortress established in the southwestern United States by the Spanish in order to protect their missions and other holdings
    • sconce - a small fort or earthwork defending a ford, pass, or castle gate
    specific instances:
    • alhambra - a fortified Moorish palace built near Granada by Muslim kings in the Middle Ages
    • bastille - a fortress built in Paris in the 14th century and used as a prison in the 17th and 18th centuries; it was destroyed July 14, 1789 at the start of the French Revolution
    • tower of london - a fortress in London on the Thames; used as a palace and a state prison and now as a museum containing the crown jewels
    • machu picchu - Inca fortress city in the Andes in Peru discovered in 1911; it may have been built in the 15th century
    has: battlement, crenelation, crenellation - a rampart built around the top of a castle with regular gaps for firing arrows or guns
    same as: fort

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