We found 17 dictionaries that define the word sills:

General (14 matching dictionaries)

1. sills: Merriam-Webster
2. Sills: Collins English Dictionary
3. Sills: Vocabulary.com
4. Sill's, Sills, sills: Wordnik
5. sills: Cambridge Advanced Learner's Dictionary
6. Sills, sills: Wiktionary
7. Sills: Infoplease Dictionary
8. sills: Dictionary.com
9. sills: Cambridge Essential American English Dictionary
10. Sills: Wikipedia, the Free Encyclopedia
11. Sills: Rhymezone
12. sills: FreeDictionary.org
13. sills: Mnemonic Dictionary
14. Sills: TheFreeDictionary.com

Business (1 matching dictionary)

15. Sills: Legal dictionary

Computing (1 matching dictionary)

16. Sills: Encyclopedia

Slang (1 matching dictionary)

17. sills: Urban Dictionary

(Note: See sill as well.)

Definitions from WordNet (Sills) ▸ noun:  United States operatic soprano (born in 1929) ▸ name:  A surname (rare: 1 in 33333 families; popularity rank in the U.S.: #4637) Opposite: peaks, summits, crests, mountaintops Phrases: window sills, Beverly Sills, sills beverly, Douglas Sills, Milton Sills, more... Adjectives: basic, thick, mud, intrusive, wooden, shallow, deep, door, low, high, wide ▸ Words similar to sills ▸ Usage examples for sills ▸ Idioms related to sills ▸ Wikipedia articles (New!) ▸ Popular adjectives describing sills ▸ Words that often appear near sills ▸ Rhymes of sills ▸ Invented words related to sills