heart attack(redirected from a heart attack)
1. A sudden disruption in the heart's normal functioning, as due to an obstructed coronary artery. Dad's heart attack laid him out for nearly a month. We're lucky he survived! I'm worried that she's going to have a heart attack from the amount of stress she's been under at work lately.
2. By extension, a particularly frightening, jarring, or anxious experience. Josh just about gave me a heart attack when he jumped out of the closet. I almost had a heart attack when I saw that car coming at me.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.