We found 9 dictionaries that define the word first served first come:

General (6 matching dictionaries)

1. first come, first served: Merriam-Webster
2. first come, first served: Oxford Learner's Dictionaries
3. first come, first served: Cambridge Advanced Learner's Dictionary
4. first come, first served: Dictionary.com

Computing (2 matching dictionaries)

5. first come, first served: Dictionary of Algorithms and Data Structures
6. Technopedia (No longer online)

Miscellaneous (1 matching dictionary)

7. First come, first served: Idioms

▸ Words similar to first served first come ▸ Usage examples for first served first come ▸ Idioms related to first served first come ▸ Wikipedia articles (New!) ▸ Words that often appear near first served first come ▸ Rhymes of first served first come ▸ Invented words related to first served first come