JMdict: 1779800

鉄壁 【てっぺき】

  1. [n] iron wall; impregnable fortress
  2. [adj-no] impregnable; invulnerable; unassailable; cast-iron
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Kanji in this word:

Kanji Meanings On Readings Kun Readings
鉄 Iron テツ くろがね
壁 Wall, Lining (stomach), Fence ヘキ かべ