1. use up all one's strength and energy and stop working
e.g. At the end of the march, I pooped out
Synonym: poop outpeter outrun downrun out
2. stop operating or functioning
e.g. 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