flip the bird

Definitions

To make a contemptuous gesture by raising the middle finger on a closed fist. This gesture means: Up yours! Take it in the ass! Sometimes accomplanied by the phrases: ' Sit on it and spin ' ( Pontiac Moon . 1994) or: ' Sit on it and rotate ' ( Down Periscope . 1998).
Synonyms: give someone the finger; throw a bird; the bird; big bird.
See also: digitus infamis; fig; fico.

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(Expression) To give someone an obscene gesture.
To point one's middle finger at another.