We found 29 dictionaries that define the word spillway:

General (19 matching dictionaries)

1. spillway: Merriam-Webster
2. spillway: Oxford Learner's Dictionaries
3. spillway: American Heritage Dictionary of the English Language
4. spillway: Collins English Dictionary
5. spillway: Vocabulary.com
6. Spillway, spillway: Wordnik
7. spillway: Wiktionary
8. spillway: Webster's New World College Dictionary, 4th Ed.
9. spillway: The Wordsmyth English Dictionary-Thesaurus
10. spillway: Infoplease Dictionary
11. spillway: Dictionary.com
12. Spillway: Wikipedia, the Free Encyclopedia
13. Spillway: Online Plain Text English Dictionary
14. spillway: Webster's Revised Unabridged, 1913 Edition
15. spillway: Rhymezone
16. Spillway: AllWords.com Multi-Lingual Dictionary
17. spillway: FreeDictionary.org
18. spillway: Mnemonic Dictionary
19. spillway: TheFreeDictionary.com

Business (2 matching dictionaries)

20. Construction Term Glossary (No longer online)
21. Spillway: Energy Dictionary

Computing (1 matching dictionary)

22. spillway: Encyclopedia

Medicine (2 matching dictionaries)

23. online medical dictionary (No longer online)
24. spillway: Medical dictionary

Tech (5 matching dictionaries)

25. Glossary of Meteorology (No longer online)
26. Lake and Water Word Glossary (No longer online)
27. National Weather Service Glossary (No longer online)
28. Glossary of Energy Terms (No longer online)
29. Glossary of Water Resource Terms (No longer online)

(Note: See spillways as well.)

Definitions from Wiktionary (spillway) ▸ noun:  A path designed to take away overflow safely. Similar: wasteweir, spill, floodway, overflow hole, waste gate, flowoff, escapeway, fallway, debouch, floodgate, more... Opposite: inlet, intake, dam, barrier, obstruction Phrases: chute spillway, siphon spillway, shaft spillway, drop spillway, axial spillway, more... Adjectives: concrete, overflow, gated, principal, auxiliary, main, long, ogee, natural, uncontrolled, open ▸ Words similar to spillway ▸ Usage examples for spillway ▸ Idioms related to spillway ▸ Wikipedia articles (New!) ▸ Popular adjectives describing spillway ▸ Words that often appear near spillway ▸ Rhymes of spillway ▸ Invented words related to spillway