Similar to the Austrailian slang term for a woman(a sheila), cydney refers to a painfully gorgeous and intelligent female capable of bringing destruction and desire to any man she meets. A cydney is a heartbreaker.
I just can't get that cydney from last summer out of my head.
by WediditforReggie September 21, 2005
Cydney- a girl who will make you laugh again and agian, she has the sweetest smile and knows how to make you hot. Sometimes she may act innocent but really, she can be a vixen. She usually likes to cuddle and loves to laugh with friends, she is always very very attractive once you meet her, you will never forget her and she will always stay on your mind. she is a lot of fun
"Damnnn, do you know Cydney? shes amazing!"
by BreakSeal November 18, 2011