What does 警察 mean?
警察 is a Japanese noun meaning “police; police station” in English. It can also be translated as “self-appointed enforcer (of a rule, standard, etc.)” depending on context. It is written as 警察 in kanji, けいさつ in hiragana, and keisatsu in romaji. This word is part of JLPT N4 vocabulary.
Example sentence
その場合には警察を呼びなさい。
In that case, call the police.