To Be Used Up
To Be Exhausted, To Run Out
intransitive verb, ichidan verb
Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means use up or exhaust, and this verb is to be used up, to be exhausted, or to run out.
If something is exhausted it's because you used up too (つ) much of it, and now it's all gone.
Our food stockpile ran out in the end.
Don't you think people shine brightest at the end of their lives?
While combing her fingers through her hair she told me that she had already fallen out of love with me.