Top definition
An object from the Pokemon games that helps certain Pokemon evolve.
Nidorino + Moon Stone= Nidoking
Clefairy + Moon Stone= Clefable
Jigglypuff + Moon Stone= Wigglytuff
by Shawn B. October 19, 2003
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2
A young impish child that will appear in your chat unexpected, and who is secretly a Furry.
Did you see that? What was that? OMG it's that furry, the one called Moonstone!!!
by Ecto Master January 02, 2006
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