detention/dɪˈtenʃn; dɪ`tɛnʃən/ n[U](a) detaining or being detained, esp in prison 阻止; 滞留; 拘留; （尤指）监禁 detention without trial 未经审判的关押.(b) punishment of being kept at school after it has closed 课後留校的惩罚 be given two hours' detention 被罚留校两小时.
牛津英汉双解词典