What does 警報 mean?
警報 is a Japanese noun meaning “warning; alarm; alert” in English. It is written as 警報 in kanji, けいほう in hiragana, and keihou in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
その警報で皆部屋から飛び出した。
The alarm sent everyone rushing out of the room.