What does 洞 mean?
洞 is a Japanese noun meaning “cave” or “hollow” in English. It is written as 洞 in kanji, ほら in hiragana, and hora in romaji. This word is part of JLPT N4 vocabulary.
Example sentences
木の洞に鳥が巣を作りました。
A bird built its nest in the hollow of a tree.
山の中に大きな洞があります。
There's a big cave in the mountain.