Noun: supermax
- A prison with very high security
"The most dangerous criminals were transferred to the supermax facility";
- supermax prison
- (of a prison) very high security
"The convicted terrorist was held in a supermax prison";
- super-maximum security
Derived forms: supermaxes
Type of: calaboose [US, Austral, informal], clink [informal], gaol [Brit], jail, jailhouse, pokey [informal], poky [informal], prison, slammer [informal]
Encyclopedia: Supermax