| a chattering or flighty, light-headed person. |
| a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question. |
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.