Definition of calendar noun from the Oxford Advanced American Dictionary

     

    calendar

     noun
    noun
    NAmE//ˈkæləndər//
     
     
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  1. 1 a page or series of pages showing the days, weeks, and months of a particular year, especially one that you hang on a wall a 2014 calendar see also Advent calendar
  2. 2 a record of what you have to do each day; the book or piece of software in which you write this down an appointment calendar compare appointment book, schedule
  3. 3 [usually singular] a list of important events or dates of a particular type during the year This is one of the biggest weeks in the baseball calendar. a major festival in the church's calendar This year's school calendar has become so crowded.
  4. 4a system by which time is divided into fixed periods, showing the beginning and end of a year the Islamic calendar
See the Oxford Advanced Learner's Dictionary entry: calendar