We found 23 dictionaries that define the word ys:

General (15 matching dictionaries)

1. Ys, y's, ys: Merriam-Webster
2. Y's: Oxford Learner's Dictionaries
3. ys: American Heritage Dictionary of the English Language
4. Y's, Y's: Collins English Dictionary
5. Y'S, YS, Y's, Ys, y's, ys, yS: Wordnik
6. y's, ys: Cambridge Advanced Learner's Dictionary
7. Y's, y's: Wiktionary
8. ys: Dictionary.com
9. ys: Cambridge Essential American English Dictionary
10. The Y's, Y's, Ys (Joanna Newsom album), Ys (album), Ys (anime), Ys (disambiguation), Ys (series), Ys: Wikipedia, the Free Encyclopedia
11. Y's, Ys: Online Plain Text English Dictionary
12. Y's, Ys: AllWords.com Multi-Lingual Dictionary
13. ys: FreeDictionary.org
14. y's, ys: TheFreeDictionary.com
15. Ys: Oxford Learner's Dictionaries

Business (1 matching dictionary)

16. y's, ys: Financial dictionary

Computing (2 matching dictionaries)

17. YS: Netlingo
18. y's, ys: Encyclopedia

Medicine (1 matching dictionary)

19. y's, ys: Medical dictionary

Miscellaneous (3 matching dictionaries)

20. YS: Acronym Finder
21. AbbreviationZ (No longer online)
22. AbbreviationZ (No longer online)

Slang (1 matching dictionary)

23. y's, ys: Urban Dictionary

(Note: See y as well.)

Definitions from Wiktionary (Ys) ▸ noun:  (mythology) A mythical sunken city in Brittany. Similar: ADN, AMD, and, ANE, Ans, Ethiopia, 1A, lin, yang, 0, more... Opposite: no, nay, negative, denial, refusal Types: xs, s, m, l, xl, xxl, more... Phrases: Ys vs. Trails in the Sky, Ys Strategy, model ys, more... ▸ Words similar to ys ▸ Usage examples for ys ▸ Idioms related to ys ▸ Wikipedia articles (New!) ▸ Popular adjectives describing ys ▸ Words that often appear near ys ▸ Rhymes of ys ▸ Invented words related to ys