We found 10 dictionaries that define the word nixies:

General (6 matching dictionaries)

1. nixies: Merriam-Webster
2. nixies: Collins English Dictionary
3. Nixie's, Nixies, nixies: Wordnik
4. nixies: Wiktionary
5. nixies: Dictionary.com
6. nixies: TheFreeDictionary.com

Computing (1 matching dictionary)

7. nixies: Encyclopedia

Medicine (1 matching dictionary)

8. nixies: Medical dictionary

Slang (2 matching dictionaries)

9. nixies, nixies: Green’s Dictionary of Slang
10. nixies: Urban Dictionary

(Note: See nixie as well.)

Definitions from Wiktionary (nixie) ▸ noun:  A female nix, a water-spirit. ▸ noun:  A piece of mail returned as undeliverable. ▸ Also see nixie ▸ Words similar to nixies ▸ Usage examples for nixies ▸ Idioms related to nixies ▸ Wikipedia articles (New!) ▸ Popular adjectives describing nixies ▸ Words that often appear near nixies ▸ Rhymes of nixies ▸ Invented words related to nixies