What does 一つ mean?
一つ is a Japanese noun meaning “one thing” in English. It can also be translated as “only, (not) even, just (e.g. "just try it")” depending on context. It is written as 一つ in kanji, ひとつ in hiragana, and hitotsu in romaji. This word is part of JLPT N5 vocabulary.
Example sentences
一つには、私は貧しいし、それにまた忙しくもある。
For one thing, I am poor, for another, I am busy.
妻の死の知らせを聞いてもまゆ一つ動かさなかった。
He did not even raise an eyebrow at the news of his wife's death.