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1.
A word with many meanings. This is a word that can replace nearly any other word in the dictionary to take on the appropriate meaning to the user in of that word. This was a fad that began at James Madison University in Harrisonburg, VA in the late 90's and has steadily caught on around the world today. There is an "underground" hint to the usage of this word, thus users of the term Reinders are generally accepted as cool people. It is speculated that the originators of this term were part of a secret society where Reinders was the code word for entry. Some believe that this society still exists throughout the country.
"My bologna has a first name, is Oscar. My bologna has a second name it's "R-e-i-n-d-e-r-s."

"I'd love to rent that old movie with Richard Gere, 'An officer and a Reinders' tonight.

by Drewster's Millions June 13, 2007
 
2.
An energenic, feline type creature, who rejects reading, insists on leading, and enjoys annoying teachers and anyone around him.
Jake: God Tim, you're such a fucking reinders!

Tim: Hey Screw you! I'm no cat! *Meow*
by 58418561561 May 20, 2011