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English definition of “smudge”

smudge

noun [C] uk   /smʌdʒ/ us  
a mark with no particular shape that is caused, usually by accident, by rubbing something such as ink or a dirty finger across a surface: Her hands were covered in dust and she had a black smudge on her nose.figurative She said we were nearly there, but the island was still no more than a distant smudge on the horizon.
smudgy
adjective uk   /ˈsmʌdʒ.i/ us  

smudge

verb [I or T] uk   /smʌdʒ/ us  
If ink, paint, etc. smudges or if someone smudges it, it becomes dirty or not clear because someone or something has touched it: She was crying and her mascara had smudged.
smudging
noun [U] uk   /ˈsmʌdʒ.ɪŋ/ us  
(Definition of smudge from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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