in medieval and modern Europe, day (May 1) for traditional springtime celebrations, probably originating in pre-Christian agricultural rituals. Though local usage varied widely, these celebrations commonly included the carrying in procession of trees, green branches, or garlands; the appointment of a May king and May queen; and the setting up of a May tree or Maypole. Originally such rites were intended to ensure fertility to the crops, and by extension to cattle and human beings, but in most cases this significance was gradually lost, and the practices survived merely as popular festivities. A widespread superstition held that washing the face in the May Day morning dew would beautify the skin. May Day was designated as an international labour day by the International Socialist congress of 1889. It was a major holiday in the Soviet Union and other Communist countries, and elsewhere it was the occasion for important political demonstrations.
MAY DAY
Meaning of MAY DAY in English
Britannica English vocabulary. Английский словарь Британика. 2012