/uy"toohth'/ , n. , pl. eyeteeth /-teeth'/ .
1. Dentistry. a canine tooth of the upper jaw: so named from its position under the eye.
2. cut one's eyeteeth ,
a. to gain sophistication or experience; become worldly-wise.
b. Also, cut one's eyeteeth on . to be initiated or gain one's first experience in (a career, hobby, skill, etc.).
3. give one's eyeteeth , 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.
[ 1570-80; EYE + TOOTH ]