leap year
idiomPart ofleap
leap year — idiom
1. a year, happening every four years, that has 366 days instead of 365, with an ex
1.idiom
Definition
a year, happening every four years, that has 366 days instead of 365, with an extra day added on February 29.
Example
Since 2024 is a leap year, February has twenty-nine days instead of twenty-eight.
Birthdays on February 29 are only celebrated in a real way during a leap year.