We found 25 dictionaries that define the word retaining wall:

General (18 matching dictionaries)

1. retaining wall: Longman Dictionary of Contemporary English
2. retaining wall: Merriam-Webster
3. retaining wall: Oxford Learner's Dictionaries
4. retaining wall: American Heritage Dictionary of the English Language
5. retaining wall: Collins English Dictionary
6. retaining wall: Vocabulary.com
7. retaining-wall, retaining wall: Wordnik
8. retaining wall: Wiktionary
9. retaining wall: The Wordsmyth English Dictionary-Thesaurus
10. retaining wall: Infoplease Dictionary
11. Retaining wall, retaining wall: Dictionary.com
12. Retaining wall: Wikipedia, the Free Encyclopedia
13. retaining wall: Rhymezone
14. retaining wall: FreeDictionary.org
15. retaining wall: Mnemonic Dictionary
16. retaining wall: TheFreeDictionary.com

Business (2 matching dictionaries)

17. Construction Term Glossary (No longer online)
18. retaining wall: Financial dictionary

Computing (1 matching dictionary)

19. retaining wall: Encyclopedia

Tech (4 matching dictionaries)

20. AUTOMOTIVE TERMS (No longer online)
21. Lake and Water Word Glossary (No longer online)
22. Retaining wall: Construction Glossary
23. Urban Conservation Glossary (No longer online)

(Note: See retaining_walls as well.)

Definitions from Wiktionary (retaining wall) ▸ noun:  (civil engineering) Any of several structures used to restrain a vertical-faced mass of earth. Similar: wing wall, abamurus, mattress, wall, block wall, dwarf wall, bulkhead, ledger wall, curtain wall, groundwall, more... Opposite: supporting wall, free-standing wall, boundary wall Types: crib lock, gabion, keystone, piling, sheet piling, more... Phrases: construct a retaining wall, more... ▸ Words similar to retaining wall ▸ Usage examples for retaining wall ▸ Idioms related to retaining wall ▸ Wikipedia articles (New!) ▸ Words that often appear near retaining wall ▸ Rhymes of retaining wall ▸ Invented words related to retaining wall