The 6-month-old patient's underbite was so bad that she couldn't crack nuts.

They also use rocks as tools to crack nuts.

One familiar custom is to crack nuts with one's teeth.

They can crack open nuts with their powerful jaws.

He cracked nuts, though the thief warned him he would be heard.

We have already cracked several such nuts, but many remain to be opened.

West African chimps will crack open hard nuts with stones or branches.

They have also learned to crack nuts using precise and efficient blows with a stone.

But at other times they seem like sledgehammers to crack nuts.

They will pick up rocks to crack nuts for a meal.