adjective, noun · the color black or the absence of light; dark

天已经黑了。

adjective, noun · to break into a computer system

他的账号被黑了。

adjective · illegal, secret, sinister, or dishonest

他在做黑买卖。

verb · to cause something to become black or darkened, usually through staining, smoke, or physical alteration.

厨房里的烟把墙壁熏黑了。

adjective · to conceal something or pocket it dishonestly

他把那笔钱给黑了。

adjective · to slander, defame, or speak ill of someone

那个明星经常被黑。

adjective · abbreviation for Heilongjiang province

黑A是哈尔滨市的车牌代码。