We found 9 dictionaries that define the word lion's den:

General (5 matching dictionaries)

1. lion's den: Merriam-Webster
2. the lion's den: Cambridge Advanced Learner's Dictionary
3. lion's den: Wiktionary
4. Lion's Den, Lion's Den (disambiguation), Lion's Den (mixed martial arts), Lion's Den (nightclub), Lions' Den, Lions Den, The Lions' Den: Wikipedia, the Free Encyclopedia
5. Lion's Den: TheFreeDictionary.com

Computing (1 matching dictionary)

6. Lion's Den: Encyclopedia

Medicine (1 matching dictionary)

7. Lion's Den: Medical dictionary

Miscellaneous (1 matching dictionary)

8. Lion's Den, the lions' den: Idioms

Slang (1 matching dictionary)

9. lions den: Urban Dictionary

Definitions from Wiktionary (lion's den) ▸ noun:  (idiomatic) Any dangerous or frightening place. ▸ noun:  Used other than figuratively or idiomatically: see lion, den. Phrases: the lions den, more... ▸ Words similar to lion's den ▸ Usage examples for lion's den ▸ Idioms related to lion's den ▸ Wikipedia articles (New!) ▸ Words that often appear near lion's den ▸ Rhymes of lion's den ▸ Invented words related to lion's den