黛

umber-black dye for painting the eyebrow

to substitute / to act on behalf of others / to replace / generation / dynasty / age / period / (historical) era / (geological) eon

abbr. for Heilongjiang province 黑龍江|黑龙江[Hei1 long2 jiang1]

black / dark / sinister / secret / shady / illegal / to hide (sth) away / to vilify / (loanword) to hack (computing)