1. (

• calendar

) a system of timekeeping that defines the beginning and length and divisions of the year ;

2. (

• calendar ,

) a list or register of events (appointments or social events or court cases etc); "I have you on my calendar for next Monday" ;

3. (

• calendar

) a tabular array of the days (usually for one year) ;

1. (

• calendar

) enter into a calendar ;