麻醉 (má zuì): anesthesia; to anesthetize; (fig.) to corrupt (sb's mind); to enervate; to numb the mind (to escape from harsh reality)

Before the surgery, the doctor gave the patient anesthesia, so he didn't feel any pain during the entire procedure.

This kind of anesthetic works very well; after the patient woke up, he didn't feel any discomfort at all.

When extracting a tooth, dentists usually use local anesthesia, so you'll only feel a bit numb in your mouth, but no pain.

General anesthesia makes the patient completely unconscious, so the doctor can perform the complex heart surgery.

He is allergic to anesthetics, so the doctor decided to use another, safer method of anesthesia.