guppy

Short definition from Wiktionary

Noun

1. 1
   A tiny freshwater fish, Poecilia reticulata, popular in home aquariums, that usually has a plain body and black or dark blue tail for the females and a more colorful tail for the males. The guppies can vary in size, but males are 4 cm (1.6”) and females are 7 cm (2.8”).
2. 2
   Any tiny fish.
3. 3
   A tube holding paintballs before they are loaded into the gun.
4. 4
   A hold across the palm of the hand rather than the fingertips.
5. 5
   Acanthocephalus guppii
6. 6
   Acanthocephalus reticulatus
7. 7
   Girardinus guppii
8. 8
   Girardinus petersi
9. 9
   Girardinus poeciloides
10. 10
    Girardinus reticulatus
11. 11
    Haridichthys reticulatus
12. 12
    Heterandria guppyi
13. 13
    Lebistes poecilioides
14. 14
    Lebistes reticulatus
15. 15
    Poecilia poeciloides
16. 16
    Poecilioides reticulatus

Proper noun

1. 1
   A surname.