noun
start of a season
Wasei-eigo used mainly in sports contexts to refer to the beginning of a competitive season, such as soccer or baseball. Not used for natural seasons like spring or autumn.
wasei-eigo (Japanese-coined English), from season in
サッカーのシーズンインは来月だ。
The soccer season starts next month.
シーズンインに向けてチームは練習を重ねている。
The team is practicing hard for the start of the season.