1. A sudden loss of consciousness and muscular control caused by a rupture or blockage of a blood vessel in the brain; a stroke.
Usage: medical; archaic or formal usage; modern medicine typically uses 'stroke' instead
2. A sudden, violent outburst of anger or rage.
Usage: figurative; informal

Examples

• The elderly man suffered an apoplexy and was rushed to the hospital.
• In older medical texts, apoplexy was a common diagnosis for sudden brain injuries.
• He flew into apoplexy when he learned about the mistake.
• The news sent her into such apoplexy that she could barely speak.
• Doctors now use the term 'stroke' instead of the outdated 'apoplexy'.