flatline
verb
[ ˈflatlʌɪn ]
• fail to increase; remain static.
• "their share of the vote has flatlined at about 3%"
• (of a person) die.
• "they injected themselves with a deadly drug and flatlined"
Origin:
1970s: from flat1 + line1. flatline (sense 2) is a reference to the continuous straight line displayed on a heart monitor, indicating death.
