We found 16 dictionaries that define the word high gear:

General (13 matching dictionaries)

1. high gear: Merriam-Webster
2. high gear: Oxford Learner's Dictionaries
3. high gear: American Heritage Dictionary of the English Language
4. high gear: Collins English Dictionary
5. high gear: Vocabulary.com
6. high-gear: Wordnik
7. high gear: Dictionary.com
8. High Gear (Howe II album), High Gear (Whitecross album), High Gear: Wikipedia, the Free Encyclopedia
9. high gear: Rhymezone
10. high gear: FreeDictionary.org
11. high gear: Mnemonic Dictionary
12. high gear: TheFreeDictionary.com

Computing (1 matching dictionary)

13. high gear: Encyclopedia

Slang (1 matching dictionary)

14. high gear: Urban Dictionary

Tech (1 matching dictionary)

15. AUTOMOTIVE TERMS (No longer online)

(Note: See high_gears as well.)

Definitions from WordNet (high gear) ▸ noun:  a forward gear with a gear ratio giving high vehicle velocity for a given engine speed Phrases: in high gear, more... ▸ Words similar to high gear ▸ Usage examples for high gear ▸ Idioms related to high gear ▸ Wikipedia articles (New!) ▸ Words that often appear near high gear ▸ Rhymes of high gear ▸ Invented words related to high gear