陣じん太だい鼓こ

noun

war drum

A large drum historically used on battlefields to signal troops or boost morale; now seen mainly in historical reenactments, festivals, or traditional performances.

• 戦せん国ごく時じ代だいの合かっ戦せんでは、陣じん太だい鼓この音おとが兵へい士したちの士し気きを高たかめた。

  In battles of the Warring States period, the sound of war drums boosted the soldiers' morale.