We found 18 dictionaries that define the word boulder clay:

General (13 matching dictionaries)

1. boulder clay: Merriam-Webster
2. boulder clay: Oxford Learner's Dictionaries
3. boulder clay: Collins English Dictionary
4. boulder clay: Vocabulary.com
5. boulder-clay: Wordnik
6. boulder clay: Infoplease Dictionary
7. boulder clay: Dictionary.com
8. Boulder clay: Wikipedia, the Free Encyclopedia
9. boulder clay: Rhymezone
10. boulder clay: FreeDictionary.org
11. boulder clay: Mnemonic Dictionary
12. boulder clay: TheFreeDictionary.com
13. boulder clay: Wiktionary

Business (1 matching dictionary)

14. boulder clay: Legal dictionary

Computing (1 matching dictionary)

15. boulder clay: Encyclopedia

Medicine (1 matching dictionary)

16. boulder clay: Medical dictionary

Science (2 matching dictionaries)

17. Archaeology Wordsmith (No longer online)
18. Botanical Terms (No longer online)

(Note: See boulder_clays as well.)

Definitions from Wiktionary (boulder clay) ▸ noun:  (geology) A geological deposit of clay, often full of large stones and boulders, which is formed out of the ground moraine material of glaciers and ice-sheets. Similar: till, boulderstone, boulder, boulder opal, claystone, clump, glacial till, claye, brickclay, underclay, more... Types: glacial till, head, moraine, outwash, esker, more... ▸ Words similar to boulder clay ▸ Usage examples for boulder clay ▸ Idioms related to boulder clay ▸ Wikipedia articles (New!) ▸ Words that often appear near boulder clay ▸ Rhymes of boulder clay ▸ Invented words related to boulder clay