bastion

noun

bas·​tion ˈbas-chən 

1

: a projecting part of a fortification

a bastion at each of the fort's five corners

2

: a fortified area or position

bombing island bastions

3

: stronghold sense 2

the last bastion of academic standards

—Amer. Scientist

bastioned

ˈbas-chənd 

adjective

Did you know?

Bastion is related to bastille (a word now used as a general term for a prison, but probably best known as the name of the Parisian fortress-turned-prison stormed by an angry mob at the start of the French Revolution). It comes from the Italian verb bastire, which means "to build."

Synonyms

• castle
• citadel
• fastness
• fort
• fortification
• fortress
• hold
• redoubt
• stronghold

Examples of bastion in a Sentence

the rebel army retreated to its bastion in the mountains to regroup

Recent Examples on the Web

Thought to have been built sometime during the Post-Classic Mesoamerican period (1350 to 1521), the city stood as a bastion of Zapotec culture, which first emerged in the late 6th century B.C. and flourished until the Spanish commenced their conquest of Central America. —Jack Knudson, Discover Magazine, 30 Jan. 2025

The big new corporate bet: Bitcoin Corporate treasury departments are usually bastions of caution, preferring to invest their companies’ money in stable assets like Treasury bonds. —Andrew Ross Sorkin, New York Times, 8 Jan. 2025

Leaders in Pyongyang, Beijing and Moscow are likely watching the developments in Seoul with an eye to its potential to undermine a key bastion of US power in the region – and all eyes are now on North Korea, which may be keen to use the political chaos to its advantage. —Simone McCarthy, CNN, 4 Dec. 2024

And even JPMorgan Chase — not exactly a bastion of liberalism — on Wednesday seemed to draw a line in the sand. —Allison Morrow, CNN, 25 Jan. 2025

Word History

Etymology

borrowed from Middle French, borrowed from Italian bastione, from bastia "small quadrangular fortress" (from an Upper Italian counterpart to Tuscan bastita, from feminine past participle of bastire "to build," probably borrowed from Old Occitan bastir "to weave, build," or its Gallo-Romance ancestor) + -one, augmentative suffix (going back to Latin -ō, -ōn-, suffix of nouns denoting persons with a prominent feature) — more at bastille

First Known Use

1546, in the meaning defined at sense 1

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Kids Definition

bastion

noun

bas·​tion ˈbas-chən 

: some place or something that gives protection against attack

a bastion of democracy