We found one dictionary that defines the word grind one's gears:

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1. grind one's gears: Wiktionary

Definitions from Wiktionary (grind one's gears) ▸ verb:  (informal) To annoy or irritate one. ▸ Words similar to grind one's gears ▸ Usage examples for grind one's gears ▸ Idioms related to grind one's gears ▸ Wikipedia articles (New!) ▸ Words that often appear near grind one's gears ▸ Rhymes of grind one's gears ▸ Invented words related to grind one's gears