1. a canine tooth in the upper jaw, especially one that is prominent or pointed
Usage: usually used in the plural (eyeteeth); anatomical term
2. something highly valued or prized (used in the phrase 'give one's eyeteeth')
Usage: idiomatic; figurative

Examples

• The dentist examined her eyeteeth during the routine checkup.
• He would give his eyeteeth for a chance to travel around the world.
• She'd give her eyeteeth to meet her favorite author in person.
• The vampire's eyeteeth were sharp and menacing in the movie.
• Many people would give their eyeteeth to have that kind of talent.
• The orthodontist noted that his eyeteeth were slightly misaligned.