We found 17 dictionaries that define the word ground effect:

General (12 matching dictionaries)

1. ground effect: Merriam-Webster
2. ground effect: Oxford Learner's Dictionaries
3. ground effect: Collins English Dictionary
4. ground effect: Vocabulary.com
5. ground-effect: Wordnik
6. ground effect: Wiktionary
7. ground effect: Dictionary.com
8. Ground effect (aerodynamics), Ground effect (aircraft), Ground effect (cars), Ground effect: Wikipedia, the Free Encyclopedia
9. ground effect: Rhymezone
10. ground effect: FreeDictionary.org
11. ground effect: Mnemonic Dictionary
12. ground effect: TheFreeDictionary.com

Computing (1 matching dictionary)

13. ground effect: Encyclopedia

Sports (1 matching dictionary)

14. Ground effect: Sports Definitions

Tech (3 matching dictionaries)

15. AUTOMOTIVE TERMS (No longer online)
16. ground-effect: Chapters in the Sky
17. Space and Electronic Warfare Lexicon (No longer online)

(Note: See ground_effects as well.)

Definitions from Wiktionary (ground effect) ▸ noun:  (aeronautics) Any aerodynamic effects occurring due to a vehicle's body or appendages moving in close proximity to the ground. Similar: wing in ground effect, ground-effect vehicle, ground-effect machine, ground effect machine, ground loop, ground power, groundcrew, ground clearance, terrain, landing gear, more... Phrases: ground effect machine, ground effect machines, Ground effect train, more... ▸ Words similar to ground effect ▸ Usage examples for ground effect ▸ Idioms related to ground effect ▸ Wikipedia articles (New!) ▸ Words that often appear near ground effect ▸ Rhymes of ground effect ▸ Invented words related to ground effect