A fort is a place that's made strong and secure enough to be defended during a war. Although it’s usually a military word, you can also make a fort with chairs and a blanket to defend against annoying little siblings.

A fort can also be called a fortress or a fortification, although typically a fortress describes a larger structure or a series of structures, while a fort is usually only one. All of these words come from the Latin word fortis for "strong, mighty, or brave.” Traditionally, forts have been strongly defended, with thick stone walls and other elements protecting them from invaders. Today in the US, some forts are simply military bases. Others are simply in the living room.

Definitions of fort

n a fortified defensive structure

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a fortified Moorish palace built near Granada by Muslim kings in the Middle Ages
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
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any of various Spanish fortresses or palaces built by the Moors
martello tower
a circular masonry fort for coastal defence
a fortress established in the southwestern United States by the Spanish in order to protect their missions and other holdings
a small fort or earthwork defending a ford, pass, or castle gate
Type of:
defence, defense, defensive structure
a structure used to defend against attack

n a fortified military post where troops are stationed

Fort George Gordon Meade
a United States Army base in Maryland; headquarters of the National Security Agency
Type of:
military post, post
military installation at which a body of troops is stationed

v enclose by or as if by a fortification

fortify by surrounding with trenches
fortify by furnishing with battlements for defense
Type of:
close in, enclose, inclose, shut in
surround completely

v station (troops) in a fort

Type of:
place, post, send, station
assign to a station

v gather in, or as if in, a fort, as for protection or defense

fort up
Type of:
assemble, foregather, forgather, gather, meet
collect in one place

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