| Noun | 1. | June - the month following May and preceding JulyGregorian calendar, New Style calendar - the solar calendar now in general use, introduced by Gregory XIII in 1582 to correct an error in the Julian calendar by suppressing 10 days, making Oct 5 be called Oct 15, and providing that only centenary years divisible by 400 should be leap years; it was adopted by Great Britain and the American colonies in 1752 Father's Day - US: third Sunday in June June 29, Saints Peter and Paul - first celebrated in the 3rd century Gregorian calendar month - a month in the Gregorian calendar mid-June - the middle part of June June 24, Midsummer Day, Midsummer's Day, St John's Day - a quarter day in England, Wales, and Ireland June 23, Midsummer Eve, Midsummer Night, St John's Eve, St John's Night - the night before Midsummer Day |