give someone the finger
US /ɡɪv ˈsʌm.wʌn ðə ˈfɪŋ.ɡər/
UK /ɡɪv ˈsʌm.wʌn ðə ˈfɪŋ.ɡər/

1.
손가락 욕을 하다, 가운데 손가락을 올리다
to make an obscene gesture at someone by pointing the middle finger upwards as a sign of contempt or anger
:
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The angry driver decided to give the other driver the finger after being cut off.
화난 운전자는 끼어들기 당한 후 다른 운전자에게 손가락 욕을 했다.
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It's rude to give someone the finger.
누군가에게 손가락 욕을 하는 것은 무례하다.