Definitions

1. noun

a table of the days, dates, and events of a year, showing at a glance the days of the week, month, or year, and sometimes the times of sunrise and sunset, moon phases, etc.

“She checked the calender to see when the holiday fell this year.”

2. verb

to insert or add something, especially a date or a deadline, into a schedule or a plan

“Can you calender this meeting for next Thursday?”

3. verb

to finish or complete something, especially a deadline or a task, before it is due

“She calendered the project a week ahead of schedule.”