Question

Give Your Eyeteeth for Something to want something very badly; to be willing to give up something valuable to get something else

Accepted Answer

I'd give my eyeteeth to own a motorcycle like that. Some people think eyeteeth got their name in the 1500s because the nerves of these teeth are close to the eyes. Eyeteeth are important because they're used for biting and chewing. If you want something so much that you are willing to sacrifice your eyeteeth for it, that thing must be extremely important to you. A similar expression is "to give your right arm" for something.

Idiom	Give Your Eyeteeth for Something
Example	I'd give my eyeteeth to own a motorcycle like that.
Meaning	to want something very badly; to be willing to give up something valuable to get something else
Origin	Some people think eyeteeth got their name in the 1500s because the nerves of these teeth are close to the eyes. Eyeteeth are important because they're used for biting and chewing. If you want something so much that you are willing to sacrifice your eyeteeth for it, that thing must be extremely important to you. A similar expression is "to give your right arm" for something.

Eyeteeth Give Important Motorcycle Badly Valuable People 1500s