Meaning of closed book in English

Table of contents
  1. Pronunciation
  2. Noun
    1. Definitions

  1. Pronunciation

    US accent

    UK accent

  1. Noun

    closed book

    Definitions

    1. something that baffles understanding and cannot be explained

    Examples

    • « how it got out is a mystery »
    • « it remains one of nature's secrets »

    Derived terms

Famous quotes

  • « In a Glasser Quality School there is no such thing as a closed book test. Students are told to get out their notes and open their books. There is no such thing as being forbidden to ask the teacher or another student for help. »
    William Glasser

Browse dictionary