| an extraordinary or unusual thing, person, or event; an exceptional example or instance. |
| the offspring of a zebra and a donkey. |
defibrillator de·fib·ril·la·tor (dē-fĭb'rə-lā'tər, -fī'brə-)
n.
An electrical device used to counteract fibrillation of the heart muscle and restore normal heartbeat by applying a brief electric shock.