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1.
A lesbian role model. Or someone who is your icon that is a lesbian.
Ellen DeGeneres is a Dycon. She is the best person who walks this earth!
by jonfizzle December 09, 2003
 
2.
A famous lesbian.

An example would be Xena, the awesome lesbian-warrior-princess combo from hell. Good stuff.
Kid watching TV: Dude, it's Rosie O'donald!

Friend: Eww! She's nasty, definatly not my favorite dycon.
by ZT June 06, 2005