What does 留守 mean?
留守 is a Japanese noun meaning “absence; not at home” in English. It can also be translated as “house-sitting, neglecting (e.g. one's studies)” depending on context. It is written as 留守 in kanji, るす in hiragana, and rusu in romaji. This word is part of JLPT N4 vocabulary.
Example sentence
彼女に留守を頼んで外出しました。
I went on the trip, leaving the house in her care.