| 1 | 窟 | 窟 | kū | ku1 | cave; hole | | |
| 2 | 石窟 | 石窟 | shí kū | shi2 ku1 | rock cave; grotto; cliff caves (often with Buddhist statues) | | |
| 3 | 窟窿 | 窟窿 | kū long | ku1 long5 | hole; pocket; cavity; loophole; debt | | |
| 4 | 麦积山石窟 | 麥積山石窟 | mài jī shān shí kū | Mai4 ji1 Shan1 Shi2 ku1 | Mt Maiji Caves at Tianshui 天水 , Gansu | | |
| 5 | 葬身火窟 | 葬身火窟 | zàng shēn huǒ kū | zang4 shen1 huo3 ku1 | to be engulfed in flames (idiom) | | |
| 6 | 云冈石窟 | 雲岡石窟 | yún gāng shí kū | Yun2 gang1 Shi2 ku1 | Yungang Caves at Datong 大同 , Shanxi 山西 | | |
| 7 | 销金窟 | 銷金窟 | xiāo jīn kū | xiao1 jin1 ku1 | money squandering establishment (e.g. gambling den, brothel etc) | | |
| 8 | 吴哥窟 | 吳哥窟 | wú gē kū | Wu2 ge1 ku1 | Angkor Wat, temple complex in Cambodia | | |
| 9 | 四大石窟 | 四大石窟 | sì dà shí kū | si4 da4 shi2 ku1 | the four great caves, namely: Longmen Grottoes 龙门石窟 at Luoyang, Henan, Yungang Caves 云冈石窟 at Datong, Shanxi, Mogao Caves 莫高窟 at Dunhuang, Gansu, and Mt Maiji Caves 麦积山石窟 at Tianshui, Gansu | | |
| 10 | 贫民窟 | 貧民窟 | pín mín kū | pin2 min2 ku1 | slum housing | | |
| 11 | 莫高窟 | 莫高窟 | mò gāo kū | Mo4 gao1 ku1 | Mogao caves in Dunhuang 敦煌 , Gansu | | |
| 12 | 魔窟 | 魔窟 | mó kū | mo2 ku1 | lit. nest of devils; place occupied by sinister forces | | |
| 13 | 洞窟 | 洞窟 | dòng kū | dong4 ku1 | a cave | | |
| 14 | 龙门石窟 | 龍門石窟 | lóng mén shí kū | Long2 men2 Shi2 ku1 | Longmen Grottoes at Luoyang 洛阳 , Henan | | |
| 15 | 窟臀 | 窟臀 | kū tún | ku1 tun2 | buttocks (dialect) | | |
| 16 | 窟窿眼 | 窟窿眼 | kū long yǎn | ku1 long5 yan3 | small hole | | |
| 17 | 狡兔三窟 | 狡兔三窟 | jiǎo tù sān kū | jiao3 tu4 san1 ku1 | lit. a crafty rabbit has three burrows; a sly individual has more than one plan to fall back on (idiom) | | |
| 18 | 敦煌石窟 | 敦煌石窟 | dūn huáng shí kū | Dun1 huang2 shi2 ku1 | Dunhuang caves in Gansu; refers to Mogao caves 莫高石窟 | | |
| 19 | 赌场烟窟 | 賭場煙窟 | dǔ chǎng yān kū | du3 chang3 yan1 ku1 | gambling houses and opium parlors (idiom) | | |