Hinduism ~ What is the true definition of Maya...?

What is Maya, who creates it and why it is created. How it helps or how it stops in enlightenment.

(One of my non-hindu friend wanted to know about Maya...hence this question.... so please reply in simple words so that she can understand the meaning.. no copy-n-paste pls)
Update: What happened ???
where are our hindu scholars ???
only stars and no reply??
33 answers 33