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chapter and verse

Meaning: accurate information about something.

Example: Conversations at the university can give you chapter and verse. Read more ➺

rocket science

Meaning: something very difficult to understand

Example: I've no idea why Kelly can't make a spreadsheet, and it's not exactly rocket science is it? Read more ➺

hit the books

Meaning: to study very hard

Example: I have an exam tomorrow, I need to hit the books tonight. Read more ➺