maximum-security

Adjective

not-comparable of a prison

(of a prison) Having a high level of security, designed to house the most dangerous of prisoners.

Japanese Meaning

最も危険な受刑者を収容するために設計された、高度な警備体制を有する刑務所または施設

The notorious gang leader was transferred to a maximum-security prison on Monday.

その悪名高いギャングの首領は月曜日に最高度の警備を備えた刑務所に移送された。

Sense（1）

(of a prison) Having a high level of security, designed to house the most dangerous of prisoners.