What does 一人っ子 mean?
一人っ子 is a Japanese noun meaning “(an) only child” in English. It is written as 一人っ子 in kanji, ひとりっこ in hiragana, and hitorikko in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
彼は一人っ子だったので、唯一の相続人だった。
Being an only child, he was the sole inheritor.