We found 10 dictionaries that define the word sow thistles:

General (6 matching dictionaries)

1. sow thistles: Merriam-Webster
2. sow thistles: Collins English Dictionary
3. sow thistles: Vocabulary.com
4. sow thistles: Wiktionary
5. Sow thistles: Wikipedia, the Free Encyclopedia
6. Sow thistles: TheFreeDictionary.com

Business (1 matching dictionary)

7. Sow thistles: Legal dictionary

Computing (1 matching dictionary)

8. Sow thistles: Encyclopedia

Medicine (1 matching dictionary)

9. Sow thistles: Medical dictionary

Science (1 matching dictionary)

10. A Modern Herbal, 1931, by Mrs. M. Grieve (No longer online)

(Note: See sow_thistle as well.)

Definitions from Wiktionary (sow thistle) ▸ noun:  Any of the thistles in one of the genera Cicerbita and Sonchus. ▸ Also see sow_thistle ▸ Words similar to sow thistles ▸ Usage examples for sow thistles ▸ Idioms related to sow thistles ▸ Wikipedia articles (New!) ▸ Words that often appear near sow thistles ▸ Rhymes of sow thistles ▸ Invented words related to sow thistles