洞
dòng
hole; cave
Every meaning
dòng
- hole; cave
- penetrating; thorough (as in 洞察)
- (coll.) zero (when spelling out numbers)
In the Library
红、黄、蓝、黑、白五种颜色的石头，用大火烧了很久，把石头烧化了，再慢慢地把天上的洞补好。
女娲补天 · Nüwa mends the sky · HSK 5
为什么要在这里多留四个小洞呢？
赵州桥 · Zhaozhou Bridge, the world's oldest open-spandrel arch · HSK 5
一开始，洞特别小，只能勉强过一个人。
桃花源记 · The Peach Blossom Spring, retold in modern Chinese · HSK 6
Words with 洞
Meanings are from Mandarin The Wild’s own dictionary. Levels follow the official HSK word list (the exam’s 2025 syllabus, levels 7–9 shown together).