| 黑 |
hēi dòng | (astronomy) black hole |
| 黑 |
Hēi | abbr. for Heilongjiang province 黑龙江 |
| 黑 |
hēi | black / dark / sinister / secret / shady / illegal / to hide (sth) away / to vilify / (loanword) to hack (computing) |
| 洞 |
dòng | cave / hole / zero (unambiguous spoken form when spelling out numbers) / CL:个 |