We found 23 dictionaries that define the word life jacket:

General (19 matching dictionaries)

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

Computing (1 matching dictionary)

19. life jacket: Encyclopedia

Miscellaneous (1 matching dictionary)

20. Brilliant Dream Dictionary (No longer online)

Slang (1 matching dictionary)

21. Life Jacket: Urban Dictionary

Tech (1 matching dictionary)

22. SeaTalk Dictionary of English Nautical Language (No longer online)

(Note: See life_jackets as well.)

Definitions from Wiktionary (life jacket) ▸ noun:  an article of protective clothing that is designed to keep the wearer's head floating above the surface of the water. Similar: life vest, cork jacket, lifejacket, air jacket, buoyancy aid, lifevest, personal flotation device, life preserver, life ring, life belt, more... Opposite: sink, anchor, weight, ballast Types: foam life jacket, more... Phrases: golden life jacket, more... Adjectives: inboard, tender, titanic, collapsible, inflatable, cat, liveaboard, auxiliary, outboard, topgallant, yachty ▸ Words similar to life jacket ▸ Usage examples for life jacket ▸ Idioms related to life jacket ▸ Wikipedia articles (New!) ▸ Words that often appear near life jacket ▸ Rhymes of life jacket ▸ Invented words related to life jacket