How can I assign a regex to a variable?

[Tom Browder <tom.browder@gmail.com>]

Drew showed me how to bind a string to a variable, and that works great!
However, when I tried it where I actually needed it I got an error saying a
regex was expected.

I have searched for emacs named regexps but have found nothing.  Does
anyone know how I can define a regex to be used in a function defined like
this (from package imenu.el):

(string regexp integer)

So I want to use the function like this:

("Funcs" regex-var 1)

but regex-var must be interpreted as a regex, not as a string.

Any help is appreciated.

Cheers!

-Tom