- a canine tooth of the upper jaw: so named from its position under the eye.
- cut one's eyeteeth,
- to gain sophistication or experience; become worldly-wise.
- to be initiated or gain one's first experience in (a career, hobby, skill, etc.).
- to give something one considers very precious, usually in exchange for an object or situation one desires: She would give her eyeteeth for that job.
- either of the two canine teeth in the upper jaw
- to go to any lengths to achieve or obtain (something)
