detention

detention
noun
  1. [mass noun]the action of detaining someone or the state of being detained in official custody, especially as a political prisoner
    (尤指政治犯的)拘留
    he committed suicide while in police detention.
    他在被警方拘留期间自杀。
    ■the punishment of being kept in school after hours
    (作为一种处罚的)课后留校
    teachers were divided as to the effectiveness of detention.
    教师们对于课后留校的效果意见不一。
    [count noun]masters gave lines or detentions.
    老师不是罚抄写就是罚留校。
语源
  1. late Middle English (in the sense 'withholding of what is claimed or due'): from late Latin detentio(n-), from Latin detinere 'hold back' (see detain)
英语宝典
考试词汇表