What does 休館 mean?
休館 is a Japanese noun meaning “closure (of a library, museum, etc.)” in English. It is written as 休館 in kanji, きゅうかん in hiragana, and kyuukan in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
博物館は月曜日が休館だって言われたけどな。
I've been told that the museum is closed on Mondays.