The kanji originally depicted a hand (又) holding a broom (帚, now stylized in the top part) sweeping away everything until nothing is left. This conveys the idea of exhausting or finishing something completely.
'ジン' (jin) — Imagine a **DJINN** (genie) who grants wishes until your resources are **exhausted**.
Vocabulary
努力を尽くすどりょくをつくす
to make every effort
尽きるつきる
to run out, to be exhausted
品切れしなぎれ
out of stock
力尽きるちからつきる
to run out of strength, to collapse from exhaustion