洞 的釋義 | Babel Free

釋義

1. hole; cavity; cave
2. only used in 澒洞／𭱊洞 (hòngtóng) and 洪洞 (Hóngtóng, “Hongtong”)
3. thorough; penetrating
   in-compounds, literary
4. the numeral zero (used in radio communications in aviation and by the military)
5. dong, a submunicipal administrative division in North and South Korea

對應詞

CEFR 等級