ph.

1. 逐渐消亡;灭绝;绝种
If something dies out, it becomes less and less common and eventually disappears completely.

2. （火）逐渐熄灭;（风等）逐渐停止
If something such as a fire or wind dies out, it gradually stops burning or blowing.

1. become extinct

e.g. Dinosaurs died out

Synonym: die off

2. cut or shape with a die

e.g. Die out leather for belts

Synonym: die