We found 21 dictionaries that define the word water hemlock:

General (16 matching dictionaries)

1. water hemlock: Merriam-Webster
2. water hemlock: Oxford Learner's Dictionaries
3. water hemlock: American Heritage Dictionary of the English Language
4. water hemlock: Collins English Dictionary
5. water hemlock: Vocabulary.com
6. water hemlock: Wordnik
7. water hemlock: Wiktionary
8. water hemlock: Infoplease Dictionary
9. water hemlock: Dictionary.com
10. Water-hemlock, Water hemlock: Wikipedia, the Free Encyclopedia
11. Water hemlock: Online Plain Text English Dictionary
12. water hemlock: Rhymezone
13. Water hemlock: AllWords.com Multi-Lingual Dictionary
14. water hemlock: FreeDictionary.org
15. water hemlock: Mnemonic Dictionary
16. water hemlock: TheFreeDictionary.com

Computing (1 matching dictionary)

17. water hemlock: Encyclopedia

Medicine (3 matching dictionaries)

18. water hemlock: Merriam-Webster Medical Dictionary
19. online medical dictionary (No longer online)
20. Water-hemlock, water hemlock: Medical dictionary

Science (1 matching dictionary)

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

(Note: See water_hemlocks as well.)

Definitions from Wiktionary (water hemlock) ▸ noun:  A plant of any of the species in genus Cicuta, all highly poisonous and easily confused with other non-toxic forage plants. Similar: cicuta verosa, hemlock, poison hemlock, cicuta, water horsetail, water hyacinth, waterthyme, waterleaf, death-of-man, waterplantain, more... Phrases: spotted water hemlock, more... ▸ Words similar to water hemlock ▸ Usage examples for water hemlock ▸ Idioms related to water hemlock ▸ Wikipedia articles (New!) ▸ Words that often appear near water hemlock ▸ Rhymes of water hemlock ▸ Invented words related to water hemlock