From Longman Dictionary of Contemporary Englishdefibrillatorde‧fib‧ril‧la‧tor /diːˈfɪbrəleɪtə $ -ər/ noun [countable] a machine that gives the heart an electric shock to make it start beating again after a heart attack
Examples from the Corpus
defibrillator• These ranged from a peak flow meter and a sphygmomanometer to oxygen and a defibrillator.• Penders was diagnosed with cardiomyopathy in 1991 and decided to have a defibrillator installed Thursday as insurance against heart attacks.• A defibrillator can analyze the heart rhythm of a cardiac arrest victim and administer an electric shock.• During the six minutes before medics arrived, co-workers revived his heart rhythm with the help of the defibrillator, Wiley said.• The defibrillator will be kept where employees can get to it within three minutes, Weer said. 