重じゅう砲ほう

noun

heavy artillery

Refers to large-caliber guns or cannons used in warfare. Can also be used figuratively for a powerful argument or strong criticism.

• 敵てきの重じゅう砲ほうが前ぜん線せんを砲ほう撃げきした。

  The enemy's heavy artillery bombarded the front line.

• 彼かれの演えん説ぜつは政せい敵てきへの重じゅう砲ほうとなった。

  His speech became heavy artillery against his political opponents.