English Dictionary

leap day

/liːp deɪ/

noun

An extra day intercalated into a year, especially the day intercalated into the Julian calendar every fourth year and into the Gregorian calendar every fourth year excepting centuries not divisible by 400, usually reckoned as February 29th.

Leap day is an extra day added to the calendar every four years.

意味（1）

An extra day intercalated into a year, especially the day intercalated into the Julian calendar every fourth year and into the Gregorian calendar every fourth year excepting centuries not divisible by 400, usually reckoned as February 29th.

This yere leapt, and the leap day was the morrow after the feast Terminalia.