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1.
French Fries purchased at a roadside eatery such as "MacDonalds," "Burgers' King," "Wendy's Old Fashioned Hamburgers," "The White Castle," and "Jack-in-a-Box." The opposite of homefries.
Back in Ireland we ran out of potatoes, so we came to America for roadfries.
by T-Dog Jenkins July 15, 2005
 
2.
when you're going out (walking, driving...) and you make some fries to take on the journey, usually in a bowl or cup
do you know what we need for this journey? road fries
by jay the matador October 14, 2009