birdie

Short definition from Wiktionary

Noun

1. 1
   A bird; especially, a small and cute one.
2. 2
   The completion of a hole one stroke below par.
3. 3
   A shuttlecock.
4. 4
   A penis.
5. 5
   An electromagnetic signal generated from within an electronic device.
6. 6
   A certain rude gesture in some countries, formed with the middle finger.
7. 7
   A certain rude gesture in some countries, formed with the middle and index fingers.

Verb

1. 1
   To score a birdie.
2. 2
   To score a birdie at (a hole).

Proper noun

1. 1
   A female given name from English.
2. 2
   A name for any (small) bird. (1999: Oxford Dictionary of Slang, p. 130)