洞 dung⁶ {dòng}

1. cave
2. hole
3. zero (unambiguous spoken form when spelling out numbers)
4. CL: 個

洞徹〔-彻〕 dung⁶ cit³ {dòng chè}

to have a deep insight into something

洞察 dung⁶ caat³ {dòng chá}

to see clearly

洞穿 dung⁶ cyun¹ {dòng chuān}

1. to penetrate
2. to pierce
3. to see clearly
4. to have an insight into

洞窟 dung⁶ fat¹ {dòng kū}

a cave

洞房 dung⁶ fong⁴ {dòng fáng}

1. secret inner room
2. bridal room

洞府 dung⁶ fu² {dòng fǔ}

1. cave dwelling
2. legendary abode of immortals

洞鑒〔-鉴〕 dung⁶ gaam³ {dòng jiàn}

1. to examine deeply
2. to inspect closely

洞見〔-见〕 dung⁶ gin³ {dòng jiàn}

1. insight
2. to see clearly

洞口 dung⁶ hau² {Dòng kǒu}

Dongkou county in Shaoyang 邵陽, Hunan

洞口 dung⁶ hau² {dòng kǒu}

1. cave mouth
2. tunnel entrance

洞開〔-开〕 dung⁶ hoi¹ {dòng kāi}

to be wide open

洞孔 dung⁶ hung² {dòng kǒng}

hole

洞穴 dung⁶ jyut⁶ {dòng xué}

1. cave
2. cavern

洞悉 dung⁶ sik¹ {dòng xī}

to clearly understand

洞頭〔-头〕 dung⁶ tau⁴ {Dòng tóu}

Dontou county in Wenzhou 溫州, Zhejiang

洞天 dung⁶ tin¹ {dòng tiān}

1. paradise
2. heavenly or beautiful place
3. fairyland

洞子 dung⁶ zi² {dòng zi}

1. cave
2. pit
3. (coll.) greenhouse

洞察力 dung⁶ caat³ lik⁶ {dòng chá lì}

insight

洞口縣〔--县〕 dung⁶ hau² jyun⁶ {Dòng kǒu xiàn}

Dongkou county in Shaoyang 邵陽, Hunan

洞頭縣〔-头县〕 dung⁶ tau⁴ jyun⁶ {Dòng tóu xiàn}

Dontou county in Wenzhou 溫州, Zhejiang

洞庭湖 dung⁶ ting⁴ wu⁴ {Dòng tíng Hú}

Dongting Lake in northeast Hunan province

洞察一切 dung⁶ caat³ jat¹ cai³ {dòng chá yī qiè}

to see everything clearly

洞房花燭〔---烛〕 dung⁶ fong⁴ faa¹ zuk¹ {dòng fáng huā zhú}

1. bridal room and ornamented candles
2. wedding festivities (idiom)

洞若觀火〔--观-〕 dung⁶ joek⁶ gun¹ fo² {dòng ruò guān huǒ}

clear as a flame (idiom); to see things absolutely clearly

洞房花燭夜〔---烛-〕 dung⁶ fong⁴ faa¹ zuk¹ je⁶ {dòng fáng huā zhú yè}

wedding night