The first meaning of crever is “to pop” or “to burst”. It is often used with balloons and tires.
Y a des sales gosses qui ont crevé tous les pneus du quartier.
Some brats punctured all the tires in the neighborhood.
Figuratively and colloquially, however, it means “to die”, usually with a pejorative connotation.
Si tu veux faire du vélo sur la nationale, vas-y, mais moi j’ai pas envie de crever.
If you want to ride a bicycle on a national road, do it, but I don’t want to die.
Ça sent le rat crevé là-dedans !
It smells like a dead rat in here!
Je crève de faim !
Crevé is also a colloquial adjective that means “exhausted”.
Je suis crevé, je vais me coucher.
I’m exhausted, I’m going to bed.
Listen to the examples: