Wiktionary
cracking a book
vb. (present participle of crack a book English)
Usage examples of "cracking a book".
If you don't believe me, check any physics text, encyclopedia, or nineteen other sorts of reference books-and I did that derivation without cracking a book but now I'm going to stop and find out whether I've goofed-I've had years of practice in goofing.
If you don't believe me, check any physics text, encyclopedia, or nineteen other sorts of reference books - and I did that derivation without cracking a book but now I'm going to stop and find out whether I've goofed - I've had years of practice in goofing.