also: がんさん
noun
New Year's period (January 1–3)
Refers specifically to the first three days of the New Year, a time when many businesses are closed and people visit shrines or relax at home.
元三の間、多くの会社が休みになる。
Many companies are closed during the New Year's period (January 1–3).
元三は初詣に行く人が多い。
Many people go for hatsumōde (first shrine visit) during the first three days of the New Year.
Compound of 元 (gan, 'beginning; first') and 三 (san, 'three'), referring to the first three days of the year.