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Multi-word Results
| a tough nut to crack |
a problem or situation that is difficult to solve or cope with. [2 definitions] |
| crack a book |
to open a book and read it, or to discipline oneself to study. |
| crack down |
to begin to enforce the laws, rules, or requirements more strictly. [2 definitions] |
| crack up |
(informal) to break into laughter. |
| crack-up |
a collision of a vehicle; crash. [2 definitions] |
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