plural heart attacks
: a sudden painful and dangerous condition in which your heart stops beating properly
Her chest pains turned out to be caused by a minor heart attack.
He died of a massive heart attack.
He fell off the swing and nearly gave me a heart attack. [=scared me very badly]
Cite this Entry
“Heart attack.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/heart%20attack. Accessed 15 Jun. 2026.
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