We found 16 dictionaries that define the word twenty first:

General (15 matching dictionaries)

1. twenty first: Longman Dictionary of Contemporary English
2. twenty-first: Merriam-Webster
3. twenty-first, twenty-first: Collins English Dictionary
4. twenty-first: Vocabulary.com
5. Twenty-First, Twenty-first, twenty-first: Wordnik
6. twenty-first (birthday): Cambridge Advanced Learner's Dictionary
7. twenty-first: Wiktionary
8. twenty-first: Infoplease Dictionary
9. twenty-first, twenty first: Dictionary.com
10. twenty-first: Rhymezone
11. twenty-first: FreeDictionary.org
12. twenty-first: Mnemonic Dictionary
13. twenty-first: TheFreeDictionary.com

Art (1 matching dictionary)

14. Twenty-first: Encyclopedia of Organ Stops

Phrases: twenty first amendment, more... ▸ Words similar to twenty first ▸ Usage examples for twenty first ▸ Idioms related to twenty first ▸ Wikipedia articles (New!) ▸ Words that often appear near twenty first ▸ Rhymes of twenty first ▸ Invented words related to twenty first