conk_out
1. [ verb ] stop operating or functioning
Synonyms: fail break break_down die go_bad go give_out give_way
Examples:

"The engine finally went" "The car died on the road" "The bus we travelled in broke down on the way to town" "The coffee maker broke" "The engine failed on the way to town" "her eyesight went after the accident"

Related terms: change blow_out misfire crash malfunction die break failure
2. [ verb ] use up all one's strength and energy and stop working
Synonyms: run_down peter_out run_out poop_out
Examples:

"At the end of the march, I pooped out"

Related terms: tire
Similar spelling:   coon_cat