We found 23 dictionaries that define the word gear up:

General (16 matching dictionaries)

1. gear up: Merriam-Webster
2. gear up: Oxford Learner's Dictionaries
3. gear up: Collins English Dictionary
4. gear up: Vocabulary.com
5. gear-up, gear up: Wordnik
6. gear (sb/sth) up: Cambridge Advanced Learner's Dictionary
7. gear up: Wiktionary
8. gear up: Dictionary.com
9. Gear Up: Wikipedia, the Free Encyclopedia
10. gear up: Rhymezone
11. gear up: FreeDictionary.org
12. gear up: Mnemonic Dictionary
13. gear up: TheFreeDictionary.com
14. gear up: Longman Dictionary of Contemporary English

Business (1 matching dictionary)

15. gear up: Legal dictionary

Computing (1 matching dictionary)

16. gear up: Encyclopedia

Miscellaneous (3 matching dictionaries)

17. GEAR-UP, GEAR UP: Acronym Finder
18. AbbreviationZ (No longer online)
19. gear up: Idioms

Slang (1 matching dictionary)

20. gear up: Urban Dictionary

Tech (1 matching dictionary)

21. AUTOMOTIVE TERMS (No longer online)

Definitions from Wiktionary (gear up) ▸ verb:  (intransitive or reflexive, idiomatic) To prepare for an activity. ▸ verb:  (intransitive, idiomatic) To put on special clothing or equipment. Similar: set, set up, ready, prepare, ready up, get ready, tool up, warm up, gird, gird up one's loins, more... Opposite: wind down, slow down, relax, unwind Phrases: gear up for, gear it up, more... Adjectives: close, scrub, open, set up, stopgap, shut, draft, laydown, shut up, backcast, thwart ▸ Words similar to gear up ▸ Usage examples for gear up ▸ Idioms related to gear up ▸ Wikipedia articles (New!) ▸ Words that often appear near gear up ▸ Rhymes of gear up ▸ Invented words related to gear up