We found 19 dictionaries that define the word ancients:

General (14 matching dictionaries)

1. ancients, the ancients: Merriam-Webster
2. the ancients: Oxford Learner's Dictionaries
3. ancients: Collins English Dictionary
4. ancients: Vocabulary.com
5. Ancient's, Ancients, ancients: Wordnik
6. ancients: Wiktionary
7. ancients: Dictionary.com
8. Ancients (Eternal Darkness), Ancients (Farscape), Ancients (Legacy of Kain), Ancients (Stargate), Ancients (art group), The Ancients (Stargate): Wikipedia, the Free Encyclopedia
9. ancients: Rhymezone
10. ancients: FreeDictionary.org
11. ancients: Mnemonic Dictionary
12. ancients: TheFreeDictionary.com

Business (2 matching dictionaries)

13. Bouvier's Law Dictionary 1856 Edition (No longer online)
14. Ancients: Legal dictionary

Computing (1 matching dictionary)

15. ancients: Encyclopedia

Slang (1 matching dictionary)

16. Ancients: Urban Dictionary

Tech (1 matching dictionary)

17. ancients: Coin Collecting

(Note: See ancient as well.)

Definitions from Wiktionary (ancients) ▸ noun:  The people of classical antiquity, especially such writers and philosophers. Similar: antique, age-old, old, past, antiquity, ancientry, ancientism, classical antiquity, ancienty, antiquarianism, more... Opposite: moderns, contemporaries, present-day Phrases: the ancients, Council of Ancients, Quarrel of the Ancients and the Moderns, Canyons of the Ancients National Monument, Testimony of the Ancients, more... Adjectives: other, many, great, wiser, few, true, illustrious, classical, learned, famous, chinese ▸ Words similar to ancients ▸ Usage examples for ancients ▸ Idioms related to ancients ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ancients ▸ Words that often appear near ancients ▸ Rhymes of ancients ▸ Invented words related to ancients