We found 18 dictionaries that define the word sisters:

General (11 matching dictionaries)

1. sisters: Merriam-Webster
2. sisters: Collins English Dictionary
3. Sisters, sisters: Vocabulary.com
4. Sister's, Sisters, sister's, sisters, sisters: Wordnik
5. sisters: Cambridge Advanced Learner's Dictionary
6. Sisters, sisters: Wiktionary
7. sisters: Dictionary.com
8. sisters: Cambridge Essential American English Dictionary
9. Sisters (American TV series), Sisters (Australian TV series), Sisters (German duo), Sisters (Lynne Cheney novel), Sisters (Once Upon a Time), Sisters (Steel novel), Sisters (Sweethearts of the Rodeo album), Sisters (TV series), Sisters (The Bluebells album), Sisters (U.S. TV series), Sisters (disambiguation), Sisters (graphic novel), Sisters (song), Sisters, The Sisters (California), The Sisters (New Zealand), The Sisters (Painting), The Sisters (Sister Sledge album), The Sisters (play), The Sisters (short story): Wikipedia, the Free Encyclopedia
10. Sisters: TheFreeDictionary.com
11. sisters: Wikimedia Commons US English Pronunciations

Business (1 matching dictionary)

12. Sisters: Legal dictionary

Computing (1 matching dictionary)

13. Sisters: Encyclopedia

Medicine (2 matching dictionaries)

14. sisters: Merriam-Webster Medical Dictionary
15. Sisters: Medical dictionary

Miscellaneous (2 matching dictionaries)

16. AbbreviationZ (No longer online)
17. Sisters: Idioms

Slang (1 matching dictionary)

18. sisters: Urban Dictionary

(Note: See sister as well.)

Definitions from Wiktionary (Sisters) ▸ noun:  A city in Deschutes County, Oregon. Opposite: brothers, unrelated, strangers, non-relatives, enemies Types: fraternal, identical, more... Phrases: three sisters, Seven Sisters, little sisters, twin sisters, five sisters, more... Adjectives: younger, older, little, elder, twin, dear, weird, unmarried, half, big, franciscan ▸ Words similar to sisters ▸ Usage examples for sisters ▸ Idioms related to sisters ▸ Wikipedia articles (New!) ▸ Popular adjectives describing sisters ▸ Words that often appear near sisters ▸ Rhymes of sisters ▸ Invented words related to sisters