retracement explaination - help needed

Hi to everybody!
I am a newbie and can't understand what the term "retracement" means. my language is not english and there's no definition of this word in my dictionary. Could anyone explain to me what "retracement" means???!!! your assistance is very appreciated and will be very helpful to me. Also if there are any expirienced traders could anyone show me the retracement on the screenshot of a chart???!. your help is needed pls.

http://www.investopedia.com/terms/r/retracement.asp

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thanks a lot!!!