迷子の

lost

→ 迷子
phrase Rare #33,191
lost Describes a person or animal that is lost; の connects 迷子 to the following noun.
JA: 公園で迷子の犬を見つけました。
EN: I found a lost dog in the park.

衣服からその迷子の身元確認された

The lost child's identity was confirmed based on their clothing.

迷子の青年を知らない

Do you know a young man who's lost?

— 不思議惑星キン・ザ・ザ (1986)

あの迷子の子供はどうなったのかしら

I wonder what happened to that lost child.

私はその飼い主ずっと捜していた迷子のを見つけた

I found the lost cat that its owner had been searching for all this time.