We found 37 dictionaries that define the word across the board:

General (21 matching dictionaries)

1. across-the-board, across the board: Merriam-Webster
2. across the board: Oxford Learner's Dictionaries
3. across-the-board: American Heritage Dictionary of the English Language
4. across-the-board, across-the-board, across the board: Collins English Dictionary
5. across-the-board, across the board: Vocabulary.com
6. across-the-board: Wordnik
7. across the board: Cambridge Advanced Learner's Dictionary
8. across-the-board, across the board: Wiktionary
9. across-the-board: Webster's New World College Dictionary, 4th Ed.
10. across-the-board: Infoplease Dictionary
11. across-the-board, across the board: Dictionary.com
12. Across the board: Wikipedia, the Free Encyclopedia
13. across-the-board, across the board: Rhymezone
14. across-the-board, across the board: FreeDictionary.org
15. across-the-board, across the board: Mnemonic Dictionary
16. Across The Board: A to Z list of the most popular idioms
17. across-the-board, across the board: TheFreeDictionary.com
18. Across the board: World Wide Words
19. across the board: Longman Dictionary of Contemporary English

Art (1 matching dictionary)

20. Across-the-Board: Lexicon of Linguistics

Business (9 matching dictionaries)

21. across the board: Merriam-Webster Legal Dictionary
22. MoneyGlossary.com (No longer online)
23. across-the-board: Webster's New World Finance & Investment Dictionary
24. INVESTORWORDS (No longer online)
25. Across the Board, Across the board: Futures and Options Market Terminology
26. Glossary of Media Terms (No longer online)
27. Across The Board: Investopedia
28. Across the Board: Financial dictionary
29. BusinessDictionary.com (No longer online)

Computing (1 matching dictionary)

30. across-the-board: Encyclopedia

Medicine (1 matching dictionary)

31. across the board: Merriam-Webster Medical Dictionary

Miscellaneous (2 matching dictionaries)

32. across-the-board, across the board: Idioms
33. across the board: Wordcraft Dictionary

Slang (1 matching dictionary)

34. across the board: Urban Dictionary

Sports (1 matching dictionary)

35. Horse Racing Terminology (No longer online)

Definitions from Wikipedia (Across the Board) ▸ noun:  an American crossword puzzle–based game show that aired on ABC for four months in 1959. Opposite: selective, targeted, specific, individualized Types: general, broad, overall, comprehensive, universal, blanket, more... Phrases: same across the board, similar across the board, more... ▸ Words similar to across the board ▸ Usage examples for across the board ▸ Idioms related to across the board ▸ Wikipedia articles (New!) ▸ Words that often appear near across the board ▸ Rhymes of across the board ▸ Invented words related to across the board