What is the meaning of Birdie?

A (little) bird; a birdling.

The completion of a hole one stroke below par.

A shuttlecock.

A man's penis.

An electromagnetic signal generated from within an electronic device.

A certain rude gesture in some countries, formed with the middle finger.

A certain rude gesture in some countries, formed with the middle and index fingers.

To score a birdie.

To score a birdie at (a hole).

birdie

birdie

Source: wiktionary.org