We found 5 dictionaries that define the word twenty years:

General (2 matching dictionaries)

1. twenty-years: Wordnik
2. Twenty Years (film), Twenty Years (song): Wikipedia, the Free Encyclopedia

Business (2 matching dictionaries)

3. Bouvier's Law Dictionary 1856 Edition (No longer online)
4. Twenty Years (song), Twenty years: Legal dictionary

Slang (1 matching dictionary)

5. TWENTY YEARS: Urban Dictionary

Phrases: Friends for Twenty Years, Twenty Years After, After Twenty Years, Twenty Years Later, period of twenty five years, more... ▸ Words similar to twenty years ▸ Usage examples for twenty years ▸ Idioms related to twenty years ▸ Wikipedia articles (New!) ▸ Words that often appear near twenty years ▸ Rhymes of twenty years ▸ Invented words related to twenty years