A slang word for vagina which can also be used to insult someone.
Did you let him see your choony?, Dont be such a choony.
by E-Cass February 23, 2008
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Choonie is a word to desciribe anything while wanting to be cute around parents, family, or friends.
Charlotte: Hey, look there's a choonie!

Lucy: And you got some choonie on your choonie.

Charlotte: Choonie!

Person in corner: quit trying to be cute!
by Charchar22 August 14, 2011
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Choonis is the informal combination of two roots:

ooniʅ (poonis, havishamical origin)- which is an unnatural peenis that is capable of using suction and has various organic attachments, very few are born with these and they are assumed to be extinct.

chode - a fat penis with great girth and little length.

Hence choonis, which was used as an insult to those who were born with poonises. But since these people are extint it is currently used as a generic insult
Man that guy was such a choonis, he stole my grilled cheese sand-witch!!!!! (and I do mean a witch)
by GrilledCheeseWitch February 18, 2010
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