BREAK [I, T] › to break something so that it does not separate, but very thin lines appear on its surface, or to become broken in this way: Linda cracked her tooth when she fell. The concrete had started to crack. cracked dishes EGG/NUT [T] › to open an egg or nut by breaking its shell HIT [T] › to hit a part of your body against something hard, by accident: He cracked his head on the cupboard door. SOLVE [T] informal › to solve a difficult problem: It took three months to crack the enemy's code.
get cracking informal › to start doing something quickly: Let's get cracking! We've only got two days to finish.
LOSE CONTROL [I] › to lose control of your emotions and be unable to deal with a situation: He finally cracked after years of stress. NOISE [I, T] › to make a sudden, short noise, or to cause something to make this noise
crack a joke › to tell a joke