Derived from the greek term (perfection); A Rachel is known and the most beautiful females of all time. A Rachel is quite easy to spot with her beautiful hair, a tiffanys braclet, Abercrombie outfits, and the nicest ass you will ever see.
That girl was so beautiful! Damn man, she was a Rachel.
Rachel is a strange creature that usually takes its habitance in a small cold region of Ireland . She is generally ginger and a raging slut/whore/alcoholic , Rachel's are generally people to steer clear of , not a person to bring home to your mother or father. All around Rachel's are horrible people.
Person 1 : "Is that a Rachel ?"
Person 2 : "QUICK RUN!!"