English Reference

Word

bailey

Phoneticsbai·ley

US/ˈbeɪɫi/

UK/bˈeɪli/

Definitions

01castle courtyard

C2

n. the open area or courtyard inside the outer walls of a castle.

n. the enclosed area or courtyard within the outer defensive walls of a medieval castle or fortress.

“The soldiers gathered in the bailey to prepare for the king's arrival.”

“The inner bailey was heavily protected, serving as the final line of defence should the outer walls be breached by the invading army.”

Technical

Usage

Often used in the phrase 'motte and bailey' to describe early castle designs.

02castle wall

C2

n. the outer wall that protects a castle.

n. the outer defensive wall of a feudal castle.

“Archers stood along the bailey to watch for enemies approaching from the woods.”

“The stone bailey replaced the original wooden palisade as the fortification was upgraded during the twelfth century.”

Archaic · Technical

03rhetorical fallacy

C2

n. a difficult or controversial idea that someone tries to defend after making a much simpler claim.

n. the controversial or difficult-to-defend position in a 'motte-and-bailey' fallacy, where a speaker retreats to a simpler 'motte' when challenged.

“The politician used a bailey argument that sounded good but was impossible to prove.”

“In philosophical debate, the bailey represents the ambitious but vulnerable claim that the speaker truly wants to advance despite its logical weaknesses.”

Academic

Usage

Almost exclusively used within the context of discussing the 'motte-and-bailey' fallacy.

Teaching tip

This is a very niche term used in logic and internet-era rhetoric; most native speakers will only know the castle-related meaning.

Synonyms

Real-World Examples

“Nepal has requested that its neighbours, India and ​China, provide bailey bridges to reopen transport and communication in an area where about two dozen bridges have been destroyed.”
The Guardian · 30 Aug 2026

Etymology

(English topographic surname): See bailey (“outer castle wall”)

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Level
C2 · Proficiency
Frequency
Common
Updated

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