Wala or Walah والله it's a way to swear - to say that you are saying the truth - to ask or too make sure of sometimes , like the word ( really ? ) other word is ولا that Karim explain it above

If you mean wala ولا it means nor: He neither came nor called لا جه ولا اتصل and it depends on the context If you mean walaa: ولاء it means loyalty & if you mean the slang Egyptian accent word wla ولا it means you boy! so where did you hear it, Allison? :)

dear there is nothing more i can add to what my friends said here it's a great explanation.

In egyptian dialect wala means nor example: I don't like neither tea nor coffee ana mabahebesh elshay wala elahwa