We found one dictionary that defines the word get brain in gear:

Miscellaneous (1 matching dictionary)

1. get brain in gear: Idioms

▸ Words similar to get brain in gear ▸ Usage examples for get brain in gear ▸ Idioms related to get brain in gear ▸ Wikipedia articles (New!) ▸ Words that often appear near get brain in gear ▸ Rhymes of get brain in gear ▸ Invented words related to get brain in gear