What does 倒壊 mean?
倒壊 is a Japanese noun meaning “collapse” in English. It can also be translated as “eastern sea, Tōkaidō (Edo-period Edo-Kyoto highway), Japan” depending on context. It is written as 倒壊 in kanji, とうかい in hiragana, and toukai in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
１週間後に、その家は倒壊した。
Down fell the house a week later.