ˈleap year noun [countable][
Date: 1300-1400;
Origin: Perhaps because a date in such a year "jumps" one day ahead of the day on which it would otherwise have fallen]
a year, which happens every fourth year, when February has 29 days instead of 28
[TahlilGaran] Dictionary of Contemporary English ▲
leap year n. Every fourth year during which the month of February contains 29 rather than 28 days.
During a leap year one must wait a day longer for one's February pay check. [TahlilGaran] English Idioms Dictionary ▲