We found 26 dictionaries that define the word oil slick:

General (19 matching dictionaries)

1. oil slick: Longman Dictionary of Contemporary English
2. oil slick: Merriam-Webster
3. oil slick: Oxford Learner's Dictionaries
4. oil slick: American Heritage Dictionary of the English Language
5. oil slick: Collins English Dictionary
6. oil slick: Vocabulary.com
7. oil-slick, oil slick: Wordnik
8. oil slick: Cambridge Advanced Learner's Dictionary
9. oil slick: Wiktionary
10. oil slick: The Wordsmyth English Dictionary-Thesaurus
11. oil slick: Infoplease Dictionary
12. oil slick: Dictionary.com
13. Oil Slick (Transformers), Oil slick: Wikipedia, the Free Encyclopedia
14. oil slick: Rhymezone
15. oil slick: FreeDictionary.org
16. oil slick: Mnemonic Dictionary
17. oil slick: TheFreeDictionary.com

Computing (1 matching dictionary)

18. oil slick: Encyclopedia

Slang (3 matching dictionaries)

19. Oil Slick (offensive): Racial Slur Database
20. oil slick: Green’s Dictionary of Slang
21. Oil Slick: Urban Dictionary

Tech (3 matching dictionaries)

22. Glossary of Meteorology (No longer online)
23. Lake and Water Word Glossary (No longer online)
24. SeaTalk Dictionary of English Nautical Language (No longer online)

(Note: See oil_slicks as well.)

Definitions from Wiktionary (oil slick) ▸ noun:  A thin film of oil floating on the surface of water, especially one that has leaked or been discharged from a ship. Similar: oil spot, oil-down, oil down, slick, storm oil, soap film, mousse, oilsmoke, sheen, pool, more... Opposite: oil-free, clean, clear, pristine ▸ Words similar to oil slick ▸ Usage examples for oil slick ▸ Idioms related to oil slick ▸ Wikipedia articles (New!) ▸ Words that often appear near oil slick ▸ Rhymes of oil slick ▸ Invented words related to oil slick