Bedeutung von “blacken” — Learner’s Dictionary

blacken

verb us uk /ˈblækən/
DARK [ I, T ]

to become black or to make something become black:

Storm clouds blackened the sky.
BAD [ T ]

If you blacken someone's name, you say bad things about them.

(Definition von “blacken” aus dem Cambridge Learner's Dictionary © Cambridge University Press)