1. A general placeholder word that can be used to replace any word you can't think of at the moment or don't feel like pronouncing.
2. A code word for something that two or more people know the meaning of but that they don't want other people overhearing the conversation to understand.
"Hey, uh, could you pass me the bag with the shlarb in it?" (winks)
"Yeah sure."

(In this case shlarb is being used as code for weed)
by GLaz April 5, 2014
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