tetracaine

/ˈtɛtrəˌkeɪn/
noun
  1. A local anesthetic used to numb the surface of the skin or eyes for medical procedures.
    • Tetracaine is often used in minor surgeries to prevent pain.
    • The doctor applied tetracaine drops to the patient's eye before the exam.
    • The dentist used a tetracaine gel to numb the gums before the injection.