I need to retrieve Word 2011 for Mac! Lost it!

Hi from a newbie macForums user!
I somehow lost the Word for Mac 2011 in my apps. It's not in the Microsoft Office folder, and I tried to move it form my dock to that folder, but it disappeared! Any way to retrieve it? Trash is empty. MS Office 2011 came with the reconditioned (not form Apple) MacBook Pro I purchased a month ago.
It's a 7,1 laptop- running 10.8.2.

Oops and thanks!

We have no idea what you did but in order to obtain a legal copy of Word you need to purchase Office 2011. You can purchase a single install copy of the Home and Student version at several web resellers for around $90.00.

As it stands now, you don't have a legal copy and you can't reinstall because you don't have the original media and serial number. Office 2011 requires activation.