| gamma knife | |
| —n | |
| an machine that uses radiation with extreme accuracy to destroy abnormal tissue, esp in the brain | |
| Main Entry: | gamma knife |
| Part of Speech: | n |
| Definition: | a medical device using intersecting beams of gamma rays to treat brain tumors and lesions |
| a chattering or flighty, light-headed person. |
| the offspring of a zebra and a donkey. |