Two accepted definitions:
1. Another way to call a person a bitch
2. A way to reference a stupid girl
2. Hear that stupid Blanch. She didn't even try to cover up that super queef.
Noun. Broken in a terrible way.
2. Listen, when you take Sabrina out for dinner - don't blanch it with her.
3. You blanched my computer.
4. Don't blanch my stuff dude, its expensive.
5. I just got into a head on collision. My car is completely blanched now.