Help me translating! - Photoshop

Hi! I have just a small stupid question that comes from the fact that my photoshop is in Italian and sometimes it's a bit difficult to find the tools that you mention here in english, cause the translation might be quite different.
I'd esp. like to know what the smudge tool is... though i know what smudge means I couldn't find anything called even close to that in my photoshop! Maybe knowing how does it looks like or where can I find it would be helpful! eheh
Thanks in advance!

edit: SOLVED! Thanks a lot to everyone who helped! :)