We found 4 dictionaries that define the word the holy of holies:

General (3 matching dictionaries)

1. the holy of holies: Longman Dictionary of Contemporary English
2. the holy of holies: Merriam-Webster
3. the holy of holies: Cambridge Advanced Learner's Dictionary

Miscellaneous (1 matching dictionary)

4. the holy of holies: Idioms

▸ Words similar to the holy of holies ▸ Usage examples for the holy of holies ▸ Idioms related to the holy of holies ▸ Wikipedia articles (New!) ▸ Words that often appear near the holy of holies ▸ Rhymes of the holy of holies ▸ Invented words related to the holy of holies