Noun
star fort (plural star forts)
(fortifications) A fort surrounded on the exterior with projecting angles.
Synonym: trace italienne
After a slight modification of the star fort allowed an expansion of just six blocks in 1888, the First World War demonstrated that the fortified system of Pamplona was already obsolete. Source: Internet
In 1888, a modest modification of the star fort was allowed, but it just permitted the building of six blocks. Source: Internet
The star fort continued to serve as a military facility until 1964, but just as a garrison. Source: Internet