We found 20 dictionaries that define the word good luck:

General (16 matching dictionaries)

1. good luck: Merriam-Webster
2. good luck: Oxford Learner's Dictionaries
3. good luck: Vocabulary.com
4. Good-luck, good-luck: Wordnik
5. good luck: Wiktionary
6. good luck, good luck: Dictionary.com
7. Good Luck (AOA EP), Good Luck (AOA song), Good Luck (Basement Jaxx song), Good Luck (Beast EP), Good Luck (TV series), Good Luck (album), Good Luck (film), Good Luck (football club), Good Luck (play), Good Luck, Good Luck, Good luck (disambiguation), Good luck: Wikipedia, the Free Encyclopedia
8. good luck: Rhymezone
9. Good luck: Stammtisch Beau Fleuve Acronyms
10. good luck: FreeDictionary.org
11. good luck: Mnemonic Dictionary
12. good luck: TheFreeDictionary.com
13. good luck: Wikimedia Commons US English Pronunciations
14. good luck: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

15. good luck: Legal dictionary

Computing (1 matching dictionary)

16. Luck, Good, good luck: Encyclopedia

Miscellaneous (1 matching dictionary)

17. Good luck, good luck: Idioms

Slang (1 matching dictionary)

18. good luck: Urban Dictionary

(Note: See good_lucks as well.)

Definitions from Wiktionary (good luck) ▸ noun:  Desirable or beneficial fortune. Similar: good fortune, fluke, break, happy chance, fortune, blessing, luck, luckling, propitiousness, fair, more... Opposite: bad luck, misfortune, ill-fortune, adversity Types: bad luck, black cat, lucky charm, four-leaf clover, lucky number, lucky day, more... Phrases: Good Luck Charm, stroke of good luck, streak of good luck, Good Luck Jerry, Good Luck to You, Leo Grande, more... Adjectives: seel, sonsy, lucky, fortuned, fair, chancy, flukey, felicitous, happy-go-lucky, sely, happy ▸ Words similar to good luck ▸ Usage examples for good luck ▸ Idioms related to good luck ▸ Wikipedia articles (New!) ▸ Words that often appear near good luck ▸ Rhymes of good luck ▸ Invented words related to good luck