鉄てっ槌ついを下くだす

expression, godan verb (-su)

crack down on; deal a crushing blow; bring down the hammer

Figurative expression meaning to take severe punitive or decisive action, often by an authority. Conveys an image of striking with an iron hammer.

• 政せい府ふは汚お職しょくに鉄てっ槌ついを下くだすと宣せん言げんした。

  The government declared it would crack down on corruption.

• 裁さい判ばん所しょは違い法ほう行こう為いに鉄てっ槌ついを下くだした。

  The court dealt a crushing blow to the illegal activities.