JMdict: 1167090

一役 【ひとやく】

  1. [n] role (which someone or something plays in a given situation); part; contribution (to a given situation)
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
One, One Radical (no.1) イチ, イツ ひと-, ひと.つ
Duty, War, Campaign, Drafted Labor, Office, Service, Role ヤク, エキ