What does 宝庫 mean?
宝庫 is a Japanese noun meaning “treasure house, treasury” in English. It can also be translated as “treasure trove” depending on context. It is written as 宝庫 in kanji, ほうこ in hiragana, and houko in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
インターネットはこの上なく貴重な情報の宝庫だ。
The Internet is an invaluable source of information.