flatline

listen to the pronunciation of flatline
English - English
to stop beating
the disappearance of the rhythmic peaks displayed on a heart monitor
to die
asystole; the absence of heart contractions
{i} reading of an EEG or EKG graphic recording; (Slang) dead person
be flatlining to be at a low level or standard that is neither increasing nor decreasing
{f} (Slang) be in cardiac arrest; die, cease living; register on an electronic monitor as having no heartbeat or brain activity; kill a person