also: おおはらい
Great Purification; Shinto purification rite
A major Shinto purification ceremony held twice a year (in June and December) and also after major disasters or the Daijōsai. The term refers specifically to the ritual, not general purification.
See also: 大嘗祭 (だいじょうさい)
The Great Purification is performed in June and December.
In the Great Purification rite, people's sins and impurities are cleansed.