公こう園えんデビュー

noun

first time bringing one's child to the local park to play

A parenting milestone in Japan, often used when a mother takes her young child to a neighborhood park for the first time to socialize with other parents and children.

• 娘むすめが一いっ歳さいになったので、そろそろ公こう園えんデビューしようと思おもう。

  Since my daughter turned one, I'm thinking it's about time for her park debut.

• 公こう園えんデビューでママ友ともができるか不ふ安あんだった。

  I was anxious about whether I'd make mom friends at the park debut.