抹黑

to discredit / to defame / to smear sb's name / to bring shame upon (oneself or one's family etc) / to blacken (e.g. commando's face for camouflage) / to black out or obliterate (e.g. censored words)

to wipe

to smear / to wipe / to erase / classifier for wisps of cloud, light-beams etc

to plaster / to go around / to skirt

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)

see 烏漆墨黑|乌漆墨黑[wu1 qi1 mo4 hei1]

to bring shame to / to smear / to disgrace