penitentiary
/ˌpenɪˈtenʃərɪ; ˌpɛnə`tɛnʃərɪ/ n
(US) federalor state prison for people who have committed serious crimes （联邦或州的）监狱. penitentiary, adj
(a) of or relating to penance 自我惩罚的; 赎罪的.
(b) of or relating to treatment intendedto reform offenders 感化的.