We found 12 dictionaries that define the word separate the men from the boys:

General (8 matching dictionaries)

1. separate the men from the boys: Longman Dictionary of Contemporary English
2. separate the men from the boys: Merriam-Webster
3. separate the men from the boys: Oxford Learner's Dictionaries
4. separate the men from the boys: Collins English Dictionary
5. separate the men from the boys: TheFreeDictionary.com
6. separate the men from the boys: Wiktionary

Business (1 matching dictionary)

7. separate the men from the boys: Legal dictionary

Computing (1 matching dictionary)

8. separate the men from the boys: Encyclopedia

Medicine (1 matching dictionary)

9. separate the men from the boys: Medical dictionary

Miscellaneous (1 matching dictionary)

10. separate the men from the boys: Idioms

Definitions from Wiktionary (separate the men from the boys) ▸ verb:  To identify (by means of a challenge or ordeal) which of a group of males are mature, courageous or masculine, and which are not. Similar: segregate, separate, separate out, split up, separation, separative, separatory, seperation, segregation, Sex segregation, more... ▸ Words similar to separate the men from the boys ▸ Usage examples for separate the men from the boys ▸ Idioms related to separate the men from the boys ▸ Wikipedia articles (New!) ▸ Words that often appear near separate the men from the boys ▸ Rhymes of separate the men from the boys ▸ Invented words related to separate the men from the boys