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.
娘が一歳になったので、そろそろ公園デビューしようと思う。
Since my daughter turned one, I'm thinking it's about time for her park debut.
公園デビューでママ友
I was anxious about whether I'd make mom friends at the park debut.