| 窟 | kū | cave; hole |
| 窟窿 | kū long | hole; pocket; cavity; loophole; debt |
| 贫民窟 | pín mín kū | slum housing |
| 吴哥窟 | Wú gē kū | Angkor Wat, temple complex in Cambodia |
| 四大石窟 | sì dà shí kū | 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 |
| 敦煌石窟 | Dūn huáng shí kū | Dunhuang caves in Gansu; refers to Mogao caves 莫高石窟 |
| 洞窟 | dòng kū | a cave |
| 狡兔三窟 | jiǎo tù sān kū | lit. a crafty rabbit has three burrows; a sly individual has more than one plan to fall back on (idiom) |
| 石窟 | shí kū | rock cave; grotto; cliff caves (often with Buddhist statues) |
| 窟臀 | kū tún | buttocks (topolect) |
| 莫高窟 | Mò gāo kū | Mogao caves in Dunhuang 敦煌, Gansu |
| 销金窟 | xiāo jīn kū | money squandering establishment (e.g. gambling den, brothel etc) |
| 云冈石窟 | Yún gāng shí kū | Yungang caves at Datong 大同, Shanxi 山西 |
| 魔窟 | mó kū | lit. nest of devils; place occupied by sinister forces |
| 麦积山石窟 | Mài jī shān shí kū | Mt Maiji caves at Tianshui 天水, Gansu |
| 龙门石窟 | Lóng mén shí kū | Longmen grottoes at Luoyang 洛阳, Henan |
