うろ Also written うつお, うつほ, うつせ, 虚, 空, 洞 Meanings Noun hollow; cavity; hole Example sentences キツネは木のうろの中に隠れました。The fox hid in the hollow tree. Words containing うろ ちしまふうろ woolly geranium (Geranium erianthum) Jinuma: Japanese Dictionary · Word lists