We found 22 dictionaries that define the word Hanoi:

General (18 matching dictionaries)

1. Hanoi: Merriam-Webster
2. Hanoi: Oxford Learner's Dictionaries
3. Hanoi: American Heritage Dictionary of the English Language
4. Hanoi: Collins English Dictionary
5. Hanoi: Vocabulary.com
6. Hanoi, hanoi: Wordnik
7. Hanoi: Wiktionary
8. Hanoi: Webster's New World College Dictionary, 4th Ed.
9. Hanoi: The Wordsmyth English Dictionary-Thesaurus
10. Hanoi: Infoplease Dictionary
11. Hanoi: Dictionary.com
12. Hanoi: Online Etymology Dictionary
13. Hanoi (disambiguation), Hanoi: Wikipedia, the Free Encyclopedia
14. Hanoi: Rhymezone
15. hanoi: FreeDictionary.org
16. hanoi: Mnemonic Dictionary
17. Hanoi: TheFreeDictionary.com
18. hanoi: Longman Dictionary of Contemporary English

Computing (2 matching dictionaries)

19. Hanoi: Free On-line Dictionary of Computing
20. Hanoi (Vietnam), Hanoi: Encyclopedia

Medicine (1 matching dictionary)

21. online medical dictionary (No longer online)

Slang (1 matching dictionary)

22. HaNoi: Urban Dictionary

(Note: See hanois as well.)

Definitions from Wiktionary (Hanoi) ▸ noun:  The capital city of Vietnam. ▸ noun:  (metonymically) the Vietnamese government. Similar: capital of vietnam, Vientiane, Saigon, Havana, Biên Hòa, Ho Chi Minh City, Vinh, Ho Chi Minh, Hà Tĩnh, Hạ Long, more... Opposite: noiha Phrases: Hanoi Hilton, towers of Hanoi, Tower of Hanoi, Hanoi Rocks, Hanoi Metro, more... Adjectives: pro, saigon, paris, moscow, central, day, peking, orient, modern, anti, haiphong Colors:     red,     yellow,     green,     blue,     white, more... ▸ Word origin ▸ Words similar to Hanoi ▸ Usage examples for Hanoi ▸ Idioms related to Hanoi ▸ Wikipedia articles (New!) ▸ Popular adjectives describing Hanoi ▸ Words that often appear near Hanoi ▸ Rhymes of Hanoi ▸ Invented words related to Hanoi