This is an odd request and something I've never had to worry about in Illustrator until now. I'm building out a logo that will be printed on a shirt. Instead of having a solid black border around the vector hand, the client wants the black border to be "transparent" so when it is placed on top of a pattern, you see the pattern background. I have an example below of what I'm trying to accomplish.
The second photo I mocked up in Photoshop to show what I'm trying to do. It's very easy to select the border path in Photoshop and simply wipe it out. Does Illustrator have a "transparent" fill option in the Path area? Selecting a color and dropping the transparent percentage didn't do the trick.