Definition of fort in US English:



  • 1A fortified building or strategic position.

    ‘the city was guarded by a ring of forts’
    • ‘After nearly half an hour, a large stone fort began to form in the horizon.’
    • ‘The mound is surmounted by an old Turkish fort.’
    • ‘Was this a prehistoric promontory fort, as traces might indicate?’
    • ‘The port was guarded by strong tower forts at the entrance to the harbour.’
    • ‘I could construct the very best forts around.’
    • ‘There are around 50 hill forts in total in the county.’
    • ‘What's he going to do after he builds the snow fort?’
    • ‘The larger auxiliary forts were also provided with smaller hospitals, of which several in Great Britain have been excavated.’
    • ‘Meanwhile, those few who had managed to scramble ashore were sheltering below a ruined Turkish fort.’
    • ‘This period saw the establishment of a number of strongly defended forts on strategically placed high points all over the region.’
    • ‘The Roman army had hospitals in its frontier forts and along major routes.’
    • ‘Captured forts and colonies were useful bargaining items at the peace talks.’
    • ‘Attempts to associate the visit with restructuring and improving the coastal forts of Britain have not survived archaeological scrutiny.’
    • ‘Archaeologists have identified one of Britain's largest prehistoric hill forts in the North Yorkshire Moors.’
    • ‘In the 1960s, many of the old coastal forts were turned over to the National Park Service.’
    • ‘At the east end is a small promontory fort, probably Iron Age.’
    • ‘Tomas pointed out the promontory forts that are dotted around the area.’
    • ‘Some are like ancient forts, some like old men bowing.’
    • ‘Soon he arrived at what appeared to be a very primitive border fort.’
    • ‘The ship fired a dozen shots at the ancient Spanish fort guarding the capital.’
    fortress, castle, citadel, blockhouse, burg, keep, tower, donjon, turret
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    1. 1.1 A permanent army post.
      • ‘A garrison court-martial was identical to a regimental court-martial, but was appointed by the officer commanding a fixed post such as a fort.’
      • ‘The park is also home to a Civil War fort with a history as intricate and unique as the waterways of the sound.’
      • ‘There were several hundred American defenders on the earthworks and fort at Breed's Hill, with a tiny detachment down on the smaller Bunker Hill.’
      • ‘The former Army coastal defense fort, built in 1942, sits in second-growth forest about two miles north of Coupeville.’
      • ‘This meant that the pontoon idea which he had employed for the Naval forts would not be suitable.’
      • ‘A Pakistani army fort stands where the young Winston Churchill shot down rebels.’
      • ‘Fort Apache was founded as a military post in 1863 and decommissioned in 1922.’
      • ‘It is unique among the American forts at Pensacola in being designed solely for resisting an infantry assault.’
      • ‘The Army Corps of Engineers is constructing 34 forts and is planning to build 66 more in the coming months.’
      • ‘It ran through my head outside the army forts in Derry and a dozen other towns.’
      • ‘Audience members will be led through the tunnels of this abandoned military fort to encounter choreographed tableaux vivants that evoke each of the seven deadly sins.’
      • ‘The Civil War had demonstrated the inadequacy of the old coastal forts.’
      • ‘Army forts and posts, crucial to the defense and settlement of the frontier, dominated the region's social and economic life.’
      • ‘The Army established the fort in 1867 to protect rail lines planned to run through the area to help move livestock.’
      • ‘This is important because as long as your hero, leader, or at least one of the company troops stays alive, they can regroup near a town, or fort and be re-supplied.’
      • ‘They aren't ready to resume their normal duties, and, in most cases, they have to continue living at the fort to receive the Army's free medical treatment.’
      • ‘Some forts were established by the regular Army to protect travelers and settlers against Indians.’
      • ‘Second, we wanted the restoration of the long-abandoned and derelict Revolutionary war fort.’
    2. 1.2historical A trading post.
      • ‘A number of other entrepreneurs established permanent trading forts in locations that were known to have mild winter climates.’


Late Middle English: from Old French fort or Italian forte, from Latin fortis ‘strong’.