You need to use your head to solve this problem.

A statue of the head of the legendary sea turtle, called 'Aoto', stands in the center of the town.

The cephalothorax of a spider is the part where the head and chest are integrated.

He injured his cephalothorax.

His attitude really makes me mad.

Because he is sharp, he can solve problems quickly.

He took a crazy action.

He is thought to be insane.

He is really a forgetful person, always forgetting names.

He swung the long sword with birds' heads carved on the pommel.