We found 13 dictionaries that define the word foobar:

General (7 matching dictionaries)

1. foobar: Oxford Learner's Dictionaries
2. foobar: Collins English Dictionary
3. Foobar, foobar: Wordnik
4. foobar: Wiktionary
5. foobar: Dictionary.com
6. Foobar (disambiguation), Foobar: Wikipedia, the Free Encyclopedia
7. Foobar, foobar: Stammtisch Beau Fleuve Acronyms

Computing (2 matching dictionaries)

8. foobar: Free On-line Dictionary of Computing
9. foobar: Encyclopedia

Medicine (1 matching dictionary)

10. online medical dictionary (No longer online)

Miscellaneous (2 matching dictionaries)

11. FOOBAR: Acronym Finder
12. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

13. Foobar, foobar: Urban Dictionary

Definitions from Wiktionary (foobar) ▸ noun:  (slang) A serious mistake. ▸ noun:  (programming) A metasyntactic variable name, a place holder for words; compare foo, bar. Similar: fox's paw, goof, goof-up, boo-boo, flub, floater, rock, fluff-up, party foul, whoopsy, more... ▸ Words similar to foobar ▸ Usage examples for foobar ▸ Idioms related to foobar ▸ Wikipedia articles (New!) ▸ Popular adjectives describing foobar ▸ Words that often appear near foobar ▸ Rhymes of foobar ▸ Invented words related to foobar