What does 亀裂 mean?
亀裂 is a Japanese noun meaning “crack; crevice; fissure; chap” in English. It is written as 亀裂 in kanji, きれつ in hiragana, and kiretsu in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
耐震性の悪い建物に亀裂が生じることもある。
Also cracks may form in buildings that aren't Earthquake proof.